diff --git a/qlib/backtest/__init__.py b/qlib/backtest/__init__.py
index 53d148280..b4a46614e 100644
--- a/qlib/backtest/__init__.py
+++ b/qlib/backtest/__init__.py
@@ -19,6 +19,7 @@ from .utils import CommonInfrastructure, LevelInfrastructure, TradeCalendarManag
 from ..utils import init_instance_by_config
 from ..log import get_module_logger
 from ..config import C
+
 # make import more user-friendly by enable `from qlib.backtest import STH`
 
 
diff --git a/qlib/backtest/exchange.py b/qlib/backtest/exchange.py
index 21a1d2547..4c726720c 100644
--- a/qlib/backtest/exchange.py
+++ b/qlib/backtest/exchange.py
@@ -9,19 +9,16 @@ if TYPE_CHECKING:
 
 from qlib.backtest.position import BasePosition, Position
 import random
-import logging
-from typing import List, Tuple, Union, Callable, Iterable
-
+from typing import List, Tuple, Union
 import numpy as np
 import pandas as pd
 
 from ..data.data import D
-from ..data.dataset.utils import get_level_index
 from ..config import C, REG_CN
 from ..utils.resam import resam_ts_data, ts_data_last
 from ..log import get_module_logger
 from .order import Order, OrderDir, OrderHelper
-from .high_performance_ds import PandasQuote, CN1Min_NumpyQuote
+from .high_performance_ds import PandasQuote, CN1min_NumpyQuote
 
 
 class Exchange:
@@ -39,7 +36,7 @@ class Exchange:
         close_cost=0.0025,
         min_cost=5,
         extra_quote=None,
-        quote_cls=PandasQuote,
+        quote_cls=CN1min_NumpyQuote,
         **kwargs,
     ):
         """__init__
diff --git a/qlib/backtest/high_performance_ds.py b/qlib/backtest/high_performance_ds.py
index 61bf636ae..6f38b390a 100644
--- a/qlib/backtest/high_performance_ds.py
+++ b/qlib/backtest/high_performance_ds.py
@@ -3,6 +3,7 @@
 
 
 from builtins import ValueError, isinstance
+from functools import lru_cache
 import logging
 from typing import List, Text, Union, Callable, Iterable, Dict
 from collections import OrderedDict
@@ -15,7 +16,7 @@ import numpy as np
 from ..utils.index_data import IndexData
 from ..utils.resam import resam_ts_data, ts_data_last
 from ..log import get_module_logger
-from ..utils.time import _if_single_data
+from ..utils.time import if_single_data
 
 
 class BaseQuote:
@@ -38,9 +39,9 @@ class BaseQuote:
         stock_id: str,
         start_time: Union[pd.Timestamp, str],
         end_time: Union[pd.Timestamp, str],
-        fields: str = None,
-        method: Union[str, Callable] = None,
-    ) -> Union[None, float, "IndexData"]:
+        fields: Union[str, None] = None,
+        method: Union[str, Callable, None] = None,
+    ) -> Union[None, Union[int, float, bool], "IndexData"]:
         """get the specific fields of stock data during start time and end_time,
            and apply method to the data.
 
@@ -62,7 +63,7 @@ class BaseQuote:
 
                 this function is used for three case:
 
-                1. Both fields and method are not None. It returns float.
+                1. Both fields and method are not None. It returns int/float/bool.
                     print(get_data(stock_id="SH600000", start_time="2010-01-04", end_time="2010-01-06", fields="$close", method="last"))
 
                     85.713585
@@ -88,15 +89,15 @@ class BaseQuote:
             closed start time for backtest
         end_time : Union[pd.Timestamp, str]
             closed end time for backtest
-        fields : str
+        fields : Union[str, None]
             the columns of data to fetch
-        method : Union[str, Callable]
+        method : Union[str, Callable, None]
             the method apply to data.
             e.g [None, "last", "all", "sum", "mean", qlib/utils/resam.py/ts_data_last]
 
         Return
         ----------
-        Union[None, float, pd.Series, pd.DataFrame, IndexData]
+        Union[None, Union[int, float, bool], IndexData]
             please refer to Example as following.
         """
 
@@ -115,121 +116,105 @@ class PandasQuote(BaseQuote):
         return self.data.keys()
 
     def get_data(self, stock_id, start_time, end_time, fields=None, method=None):
+        if fields is None and method is not None:
+            raise ValueError(f"method must be None when fields is None")
+
         if fields is None:
-            return resam_ts_data(self.data[stock_id], start_time, end_time, method=method)
-        elif isinstance(fields, (str, list)):
-            return resam_ts_data(self.data[stock_id][fields], start_time, end_time, method=method)
+            stock_data = resam_ts_data(self.data[stock_id], start_time, end_time, method=method)
+        elif isinstance(fields, str):
+            stock_data = resam_ts_data(self.data[stock_id][fields], start_time, end_time, method=method)
         else:
-            raise ValueError(f"fields must be None, str or list")
+            raise ValueError(f"fields must be None, str")
+
+        if stock_data is None:
+            return None
+        elif isinstance(stock_data, (bool, np.bool_, int, float, np.signedinteger, np.floating)):
+            return stock_data
+        elif isinstance(stock_data, pd.Series):
+            return IndexData.Series(stock_data)
+        elif isinstance(stock_data, pd.DataFrame):
+            return stock_data.values
+        else:
+            raise ValueError(f"stock data from resam_ts_data must be a number, pd.Series or pd.DataFrame")
 
 
-class CN1Min_NumpyQuote(BaseQuote):
+class CN1min_NumpyQuote(BaseQuote):
     def __init__(self, quote_df: pd.DataFrame):
-        """CN1Min_NumpyQuote
+        """CN1min_NumpyQuote
 
         Parameters
         ----------
         quote_df : pd.DataFrame
             the init dataframe from qlib.
-
-        Variables
-        self.data: Dict[stock_id, np.ndarray]
-            each stock has one two-dimensional np.ndarray to represent data.
-        self.columns: Dict[str, int]
-            map column name to column id in self.data.
-        self.dt2idx: Dict[stock_id, Dict[pd.Timestap, int]]
-            map timestap to row id in self.data.
-        self.idx2dt: Dict[stock_id, List[pd.Timestap]]
-            the dt2idx of each stock for searching.
+        self.data : Dict(stock_id, IndexData.DataFrame)
         """
-
         super().__init__(quote_df=quote_df)
-        # init data
-        columns = quote_df.columns.values
-        self.columns = dict(zip(columns, range(len(columns))))
-        self.data, self.dt2idx, self.idx2dt = self._to_numpy(quote_df)
-
-        # lru
-        self.multi_lru = {}
-        self.max_lru_len = 256
-
-    def _to_numpy(self, quote_df):
-        """convert dataframe to numpy."""
-
         quote_dict = {}
-        date_dict = {}
-        date_list = {}
         for stock_id, stock_val in quote_df.groupby(level="instrument"):
-            quote_dict[stock_id] = stock_val.values
-            date_dict[stock_id] = stock_val.index.get_level_values("datetime")
-            date_list[stock_id] = list(date_dict[stock_id])
-        for stock_id in date_dict:
-            date_dict[stock_id] = dict(zip(date_dict[stock_id], range(len(date_dict[stock_id]))))
-        return quote_dict, date_dict, date_list
+            quote_dict[stock_id] = IndexData.DataFrame(stock_val.droplevel(level="instrument"))
+        self.data = quote_dict
+        self.freq = np.timedelta64(1, "m")
 
     def get_all_stock(self):
         return self.data.keys()
 
     def get_data(self, stock_id, start_time, end_time, fields=None, method=None):
-        # check fields
-        if isinstance(fields, list) and len(fields) > 1:
-            raise ValueError(f"get_data in CN1Min_NumpyQuote only supports one field")
+        if fields is None and method is not None:
+            raise ValueError(f"method must be None when fields is None")
 
         # check stock id
         if stock_id not in self.get_all_stock():
             return None
 
-        # get single data
-        # single data is only one piece of data, so it don't need to agg by method.
-        if _if_single_data(start_time, end_time, np.timedelta64(1, "m")):
-            if start_time not in self.dt2idx[stock_id]:
+        # single data
+        # If it don't consider the classification of single data, it will consume a lot of time.
+        if if_single_data(start_time, end_time, self.freq):
+            now_index_map = self.data[stock_id].index_map
+            now_columns_map = self.data[stock_id].columns_map
+            if start_time not in now_index_map:
                 return None
             if fields is None:
-                # it used for check if data is None
-                return self.data[stock_id][self.dt2idx[stock_id][start_time]]
+                return self.data[stock_id].values[now_index_map[start_time]]
             else:
-                return self.data[stock_id][self.dt2idx[stock_id][start_time]][self.columns[fields]]
-        # get muti row data
+                return self.data[stock_id].values[now_index_map[start_time], now_columns_map[fields]]
+
+        # multi data
         else:
-            # check lru
-            if (stock_id, start_time, end_time, fields, method) in self.multi_lru:
-                return self.multi_lru[(stock_id, start_time, end_time, fields, method)]
-
-            start_id = bisect.bisect_left(self.idx2dt[stock_id], start_time)
-            end_id = bisect.bisect_right(self.idx2dt[stock_id], end_time)
-            if start_id == end_id:
-                return None
-            # it used for check if data is None
-            if fields is None:
-                return self.data[stock_id][start_id:end_id]
-            elif method is None:
-                stock_data = self.data[stock_id][start_id:end_id, self.columns[fields]]
-                stock_dt2idx = self.idx2dt[stock_id][start_id:end_id].to_list()
-                return IndexData(stock_data, stock_dt2idx)
-            else:
-                agg_stock_data = self._agg_data(self.data[stock_id][start_id:end_id, self.columns[fields]], method)
-
-            # result lru
-            if len(self.multi_lru) >= self.max_lru_len:
-                self.multi_lru.clear()
-            self.multi_lru[(stock_id, start_time, end_time, fields, method)] = agg_stock_data
-            return agg_stock_data
+            if fields is None and method is None:
+                stock_data = self.data[stock_id].loc(start_time, end_time)
+                if stock_data.empty:
+                    return None
+                else:
+                    return stock_data.values
+            elif fields is not None and method is None:
+                stock_data = self.data[stock_id].loc(start_time, end_time, fields)
+                if stock_data.empty:
+                    return None
+                else:
+                    return stock_data
+            elif fields is not None and method is not None:
+                stock_data = self.data[stock_id].loc(start_time, end_time, fields)
+                if stock_data.empty:
+                    return None
+                elif len(stock_data) == 1:
+                    return stock_data[0]
+                else:
+                    return self._agg_data(stock_data.values, method)
 
     def _agg_data(self, data, method):
         """Agg data by specific method."""
-        valid_data = data[data != np.array(None)].copy()
         if method == "sum":
-            return np.nansum(valid_data)
+            return np.nansum(data)
         elif method == "mean":
-            return np.nanmean(valid_data)
+            return np.nanmean(data)
         elif method == "last":
-            return valid_data[-1]
+            return data[-1]
         elif method == "all":
-            return valid_data.all()
+            return data.all()
         elif method == "any":
-            return valid_data.any()
+            return data.any()
         elif method == ts_data_last:
-            valid_data = valid_data[valid_data != np.NaN]
+            valid_data = data[data != np.NaN]
             if len(valid_data) == 0:
                 return None
             else:
@@ -412,6 +397,7 @@ class BaseOrderIndicator:
     def sum_all_indicators(order_indicator, indicators: list, metrics: Union[str, List[str]], fill_value: float = None):
         """sum indicators with the same metrics.
         and assign to the order_indicator(BaseOrderIndicator).
+        NOTE: indicators could be a empty list when orders in lower level all fail.
 
         Parameters
         ----------
@@ -601,6 +587,11 @@ class PandasOrderIndicator(BaseOrderIndicator):
 
 
 class NumpyOrderIndicator(BaseOrderIndicator):
+    """
+    The data structure is OrderedDict(str: IndexData.Series).
+    Each IndexData.Series is one metric.
+    Str is the name of metric.
+    """
 
     def __init__(self):
         self.data: Dict[str, IndexData.Series] = OrderedDict()
@@ -640,4 +631,4 @@ class NumpyOrderIndicator(BaseOrderIndicator):
             tmp_metric = IndexData.Series()
             for indicator in indicators:
                 tmp_metric = tmp_metric.add(indicator.data[metric], fill_value)
-            order_indicator.data[metric] = tmp_metric
\ No newline at end of file
+            order_indicator.data[metric] = tmp_metric
diff --git a/qlib/backtest/report.py b/qlib/backtest/report.py
index dbda82dd6..31c3e7b0a 100644
--- a/qlib/backtest/report.py
+++ b/qlib/backtest/report.py
@@ -3,25 +3,19 @@
 
 
 from collections import OrderedDict
-from logging import warning
 import pathlib
-from typing import Dict, List, Tuple, Union, Callable
+from typing import Dict, List, Tuple
 
 import numpy as np
 import pandas as pd
-from pandas.core import groupby
-from pandas.core.frame import DataFrame
 
 from qlib.backtest.exchange import Exchange
 from qlib.backtest.order import BaseTradeDecision, Order, OrderDir
-from qlib.backtest.utils import TradeCalendarManager
 
 from .high_performance_ds import PandasOrderIndicator, NumpyOrderIndicator
-from ..utils.index_data import IndexData, SingleData 
-from ..data import D
+from ..utils.index_data import IndexData, SingleData
 from ..tests.config import CSI300_BENCH
 from ..utils.resam import get_higher_eq_freq_feature, resam_ts_data
-from ..utils.time import Freq
 from .order import IdxTradeRange
 
 
@@ -391,9 +385,7 @@ class Indicator:
         if price_s is None:
             return None, None
 
-        if isinstance(price_s, pd.Series):
-            price_s = IndexData.Series(price_s)
-        elif isinstance(price_s, (int, float, np.floating)):
+        if isinstance(price_s, (int, float, np.signedinteger, np.floating)):
             price_s = IndexData.Series(price_s, [trade_start_time])
         elif isinstance(price_s, SingleData):
             pass
@@ -479,10 +471,10 @@ class Indicator:
                 bv_new = IndexData.Series(bv_new)
                 bp_all.append(bp_new)
                 bv_all.append(bv_new)
-            bp_all = IndexData.concat(bp_all, axis = 1)
-            bv_all = IndexData.concat(bv_all, axis = 1)
+            bp_all = IndexData.concat(bp_all, axis=1)
+            bv_all = IndexData.concat(bv_all, axis=1)
 
-            base_volume = bv_all.sum(axis = 1)
+            base_volume = bv_all.sum(axis=1)
             self.order_indicator.assign("base_volume", base_volume.to_dict())
             self.order_indicator.assign("base_price", ((bp_all * bv_all).sum(axis=1) / base_volume).to_dict())
 
diff --git a/qlib/utils/index_data.py b/qlib/utils/index_data.py
index 47e657c59..8c0d1874e 100644
--- a/qlib/utils/index_data.py
+++ b/qlib/utils/index_data.py
@@ -2,16 +2,20 @@
 # Licensed under the MIT License.
 
 
+from typing import Union, Callable
+import bisect
+
 import numpy as np
 import pandas as pd
-from typing import Union, Callable
 
 
 class IndexData:
-    """This is a simplified version of pandas which is faster based on numpy.
-    """
+    """This is a simplified version of pandas which is faster based on numpy."""
+
     @staticmethod
-    def Series(data: Union[dict, pd.Series, int, float, np.floating, list, np.ndarray] = [], index: Union[list, pd.Index] = []):
+    def Series(
+        data: Union[dict, pd.Series, int, float, np.floating, list, np.ndarray] = [], index: Union[list, pd.Index] = []
+    ):
         if isinstance(data, dict):
             return SingleData(list(data.values()), list(data.keys()))
         elif isinstance(data, pd.Series):
@@ -20,16 +24,20 @@ class IndexData:
             return SingleData(data, index)
 
     @staticmethod
-    def DataFrame(data: Union[pd.DataFrame, list, np.ndarray] = [[]], index: Union[list, pd.Index] = [], columns: Union[list, pd.Index] = []):
+    def DataFrame(
+        data: Union[pd.DataFrame, list, np.ndarray] = [[]],
+        index: Union[list, pd.Index] = [],
+        columns: Union[list, pd.Index] = [],
+    ):
         if isinstance(data, pd.DataFrame):
             return MultiData(data.values, data.index, data.columns)
-        else: 
+        else:
             return MultiData(data, index, columns)
 
     @staticmethod
-    def concat(data_list, axis = 0):
+    def concat(data_list, axis=0):
         """concat all SingleData by index.
-        just for 1-dim data.
+        TODO: now just for SingleData.
 
         Parameters
         ----------
@@ -57,15 +65,15 @@ class IndexData:
             for data_id, index_data in enumerate(data_list):
                 assert isinstance(index_data, SingleData)
                 now_data_map = [all_index_map[index] for index in index_data.index]
-                tmp_data[now_data_map, data_id] = index_data.data    
+                tmp_data[now_data_map, data_id] = index_data.data
             return MultiData(tmp_data, all_index)
         else:
             raise ValueError(f"axis must be 0 or 1")
 
 
 class BaseData:
-    """Base data structure of SingleData and MultiData.
-    """
+    """Base data structure of SingleData and MultiData."""
+
     def __init__(self):
         self.index_columns = self._get_index_columns()
 
@@ -78,8 +86,7 @@ class BaseData:
         return index_columns
 
     def _align_index(self, other):
-        """Align index before performing the four arithmetic operations.
-        """
+        """Align index before performing the four arithmetic operations."""
         raise NotImplementedError(f"please implement _align_index func")
 
     def __add__(self, other):
@@ -158,14 +165,12 @@ class BaseData:
         return self.__class__(~self.data, *self.index_columns)
 
     def abs(self):
-        """get the abs of data except np.NaN.
-        """
+        """get the abs of data except np.NaN."""
         tmp_data = np.absolute(self.data)
         return self.__class__(tmp_data, *self.index_columns)
 
     def astype(self, type):
-        """change the type of data.
-        """
+        """change the type of data."""
         tmp_data = self.data.astype(type)
         return self.__class__(tmp_data, *self.index_columns)
 
@@ -178,8 +183,7 @@ class BaseData:
         return self.__class__(tmp_data, *self.index_columns)
 
     def apply(self, func: Callable):
-        """apply a function to data.
-        """
+        """apply a function to data."""
         tmp_data = func(self.data)
         return self.__class__(tmp_data, *self.index_columns)
 
@@ -224,6 +228,10 @@ class BaseData:
     def empty(self):
         return len(self.data) == 0
 
+    @property
+    def values(self):
+        return self.data
+
 
 class SingleData(BaseData):
     def __init__(self, data: Union[int, float, np.floating, list, np.ndarray] = [], index: Union[list, pd.Index] = []):
@@ -239,7 +247,7 @@ class SingleData(BaseData):
         """
         # data
         if isinstance(data, (int, float, np.floating)):
-            self.data = np.full(len(index), fill_value=data)
+            self.data = np.full(len(index), fill_value=data, dtype=np.float64)
         elif isinstance(data, list):
             self.data = np.array(data)
         elif isinstance(data, np.ndarray):
@@ -249,12 +257,12 @@ class SingleData(BaseData):
         # data in SingleData must be one dim
         assert self.data.ndim == 1
         # replace int with float
-        if self.data.dtype == np.int:
+        if self.data.dtype == np.signedinteger:
             self.data = self.data.astype(np.float64)
         # replace None with np.NaN, because pd.Series does it.
         if None in self.data:
             self.data[self.data == None] = np.NaN
-        
+
         # index
         if isinstance(index, list):
             if index == [] and len(self.data) > 0:
@@ -265,18 +273,20 @@ class SingleData(BaseData):
         else:
             raise ValueError(f"index must be list or pd.Index")
         assert len(self.data) == len(self.index)
-        # if data is not empty, 
+        # if data is not empty,
         self.index_map = dict(zip(self.index, range(len(self.index))))
 
         super(SingleData, self).__init__()
 
     def _align_index(self, other):
         if self.index == other.index:
-            return self, other 
+            return self, other
         elif set(self.index) == set(other.index):
             return self, other.reindex(self.index)
         else:
-            raise ValueError(f"The indexes of self and other do not meet the requirements of the four arithmetic operations")
+            raise ValueError(
+                f"The indexes of self and other do not meet the requirements of the four arithmetic operations"
+            )
 
     def reindex(self, index, fill_value=np.NaN):
         """reindex data and fill the missing value with np.NaN.
@@ -291,7 +301,7 @@ class SingleData(BaseData):
         SingleData
             reindex data
         """
-        tmp_data = np.full(len(index), fill_value, np.float64)
+        tmp_data = np.full(len(index), fill_value, dtype=np.float64)
         for index_id, index_item in enumerate(index):
             if index_item in self.index:
                 tmp_data[index_id] = self.data[self.index_map[index_item]]
@@ -299,8 +309,8 @@ class SingleData(BaseData):
 
     def add(self, other, fill_value=0):
         common_index = list(set(self.index) | set(other.index))
-        tmp_data1 = self.reindex(common_index,fill_value)
-        tmp_data2 = other.reindex(common_index,fill_value)
+        tmp_data1 = self.reindex(common_index, fill_value)
+        tmp_data2 = other.reindex(common_index, fill_value)
         return tmp_data1 + tmp_data2
 
     def to_dict(self):
@@ -324,7 +334,7 @@ class SingleData(BaseData):
         return MultiData(self.data[:, np.newaxis], self.index)
 
     def to_pd_series(self):
-        return pd.Series(self.data, index = self.index)
+        return pd.Series(self.data, index=self.index)
 
     def __getitem__(self, index: Union["SingleData", int, str]):
         if isinstance(index, int):
@@ -340,7 +350,12 @@ class SingleData(BaseData):
 
 
 class MultiData(BaseData):
-    def __init__(self, data: Union[list, np.ndarray] = [[]], index: Union[list, pd.Index] = [], columns: Union[list, pd.Index] = []):
+    def __init__(
+        self,
+        data: Union[list, np.ndarray] = [[]],
+        index: Union[list, pd.Index] = [],
+        columns: Union[list, pd.Index] = [],
+    ):
         """A data structure of index and numpy data.
         It's used to replace pd.DataFrame due to high-speed.
 
@@ -363,12 +378,12 @@ class MultiData(BaseData):
         # data in SingleData must be two dim
         assert self.data.ndim == 2
         # replace int with float
-        if self.data.dtype == np.int:
+        if self.data.dtype == np.signedinteger:
             self.data = self.data.astype(np.float64)
         # replace None with np.NaN, because pd.DataFrame does it.
         if None in self.data:
             self.data[self.data == None] = np.NaN
-        
+
         # index
         if isinstance(index, list):
             if index == [] and self.data.shape[0] > 0:
@@ -379,7 +394,7 @@ class MultiData(BaseData):
         else:
             raise ValueError(f"index must be list or pd.Index")
         assert self.data.shape[0] == len(self.index)
-        # if data is not empty, 
+        # if data is not empty,
         self.index_map = dict(zip(self.index, range(len(self.index))))
 
         # columns
@@ -392,19 +407,29 @@ class MultiData(BaseData):
         else:
             raise ValueError(f"columns must be list or pd.Index")
         assert self.data.shape[1] == len(self.columns)
-        # if data is not empty, 
-        self.columns_map = dict(zip(self.columns, range(len(self.columns))))     
+        # if data is not empty,
+        self.columns_map = dict(zip(self.columns, range(len(self.columns))))
 
         super(MultiData, self).__init__()
 
     def _align_index(self, other):
         if self.index_columns == other.index_columns:
-            return self, other 
+            return self, other
         else:
-            raise ValueError(f"The indexes of self and other do not meet the requirements of the four arithmetic operations")
+            raise ValueError(
+                f"The indexes of self and other do not meet the requirements of the four arithmetic operations"
+            )
 
     def __getitem__(self, col) -> SingleData:
         if col not in self.columns:
             return SingleData()
         else:
             return SingleData(self.data[:, self.columns_map[col]], self.index)
+
+    def loc(self, start, end, col=None):
+        start_id = bisect.bisect_left(self.index, start)
+        end_id = bisect.bisect_right(self.index, end)
+        if col is None:
+            return MultiData(self.data[start_id:end_id], self.index[start_id:end_id], self.columns)
+        else:
+            return SingleData(self.data[start_id:end_id, self.columns_map[col]], self.index[start_id:end_id])
diff --git a/qlib/utils/time.py b/qlib/utils/time.py
index efee8f5eb..e9ae82c5f 100644
--- a/qlib/utils/time.py
+++ b/qlib/utils/time.py
@@ -38,7 +38,7 @@ def get_min_cal(shift: int = 0) -> List[time]:
     return cal
 
 
-def _if_single_data(start_time, end_time, freq):
+def if_single_data(start_time, end_time, freq):
     """Is there only one piece of data to obtain.
 
     Parameters