diff --git a/examples/smart_minion/human_eval/evalute_human_eval_error.py b/examples/smart_minion/human_eval/evalute_human_eval_error.py
index aed50220..1d79113f 100644
--- a/examples/smart_minion/human_eval/evalute_human_eval_error.py
+++ b/examples/smart_minion/human_eval/evalute_human_eval_error.py
@@ -284,13 +284,13 @@ async def main():
         # 从原始数据集中获取对应的完整数据
         if idx < len(original_data):
             mismatched_data.append(original_data[idx])
-    
+
     # 使用新的数据集运行评估
     correct, count, matched_ids, mismatched_ids = await evaluate_dataset(
         mismatched_data, 
         run_filename=f"run_human_eval_ldb_{model}0.json",
         continue_process=True, 
-        concurrency_count=1
+        concurrency_count=60
     )
 
     print(f"Accuracy: {correct/count:.2%}")
diff --git a/examples/smart_minion/human_eval/humaneval_public_test.jsonl b/examples/smart_minion/human_eval/humaneval_public_test.jsonl
index b5014bc4..ee717d7e 100755
--- a/examples/smart_minion/human_eval/humaneval_public_test.jsonl
+++ b/examples/smart_minion/human_eval/humaneval_public_test.jsonl
@@ -30,6 +30,7 @@
 {"problem_id": "HumanEval/29", "test": ["assert candidate([], 'a') == []", "assert candidate(['abc', 'bcd', 'cde', 'array'], 'a') == ['abc', 'array']"], "entry_point": "filter_by_prefix"}
 {"problem_id": "HumanEval/30", "test": ["assert candidate([-1, 2, -4, 5, 6]) == [2, 5, 6]", "assert candidate([5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == [5, 3, 2, 3, 9, 123, 1]"], "entry_point": "get_positive"}
 {"problem_id": "HumanEval/31", "test": ["assert candidate(6) == False", "assert candidate(101) == True", "assert candidate(11) == True", "assert candidate(13441) == True", "assert candidate(61) == True", "assert candidate(4) == False", "assert candidate(1) == False"], "entry_point": "is_prime"}
+{"problem_id": "HumanEval/32", "test": ["assert round(find_zero([1, 2]), 2) == -0.5", "assert round(find_zero([-6, 11, -6, 1]), 2) == 1.0"], "entry_point": "find_zero"}
 {"problem_id": "HumanEval/33", "test": ["assert candidate([1, 2, 3]) == [1, 2, 3]", "assert candidate([5, 6, 3, 4, 8, 9, 2]) == [2, 6, 3, 4, 8, 9, 5"], "entry_point": "sort_third"}
 {"problem_id": "HumanEval/34", "test": ["assert candidate([5, 3, 5, 2, 3, 3, 9, 0, 123]) == [0, 2, 3, 5, 9, 123]"], "entry_point": "unique"}
 {"problem_id": "HumanEval/35", "test": ["assert candidate([1, 2, 3]) == 3", "assert candidate([5, 3, -5, 2, -3, 3, 9, 0, 123, 1, -10]) == 123"], "entry_point": "max_element"}
diff --git a/minion/main/improve_route.py b/minion/main/improve_route.py
index d1bf1928..89fa87cf 100644
--- a/minion/main/improve_route.py
+++ b/minion/main/improve_route.py
@@ -1,4 +1,5 @@
 from enum import Enum, auto
+from typing import Dict, Type
 
 class ImproveRoute(Enum):
     """改进路由的枚举类"""
@@ -8,8 +9,14 @@ class ImproveRoute(Enum):
     
     @classmethod
     def get_route(cls, route_name: str) -> "ImproveRoute":
-        """根据字符串获取对应的改进路由"""
-        try:
-            return cls(route_name.lower()) #or use llm to recommendend improve route?
-        except ValueError:
-            return cls.FEEDBACK  # 默认返回 feedback 路由 
\ No newline at end of file
+        """根据字符串获取对应的改进路由
+        
+        Args:
+            route_name: 路由名称字符串
+            
+        Returns:
+            ImproveRoute: 匹配的改进路由，如果没有匹配项则返回默认的 FEEDBACK 路由
+        """
+        from minion.main.minion import IMPROVER_MINIONS
+        route_name = route_name.lower()
+        return IMPROVER_MINIONS.get(route_name, cls.FEEDBACK)
\ No newline at end of file
diff --git a/minion/main/minion.py b/minion/main/minion.py
index 5bfc89ac..35a69da2 100644
--- a/minion/main/minion.py
+++ b/minion/main/minion.py
@@ -150,17 +150,17 @@ async def execute(self):
     async def improve(self):
         # 获取改进路由
         route_name = getattr(self.input, 'improve_route', 'feedback')
-        improve_route = ImproveRoute.get_route(route_name)
+        improver_cls = ImproveRoute.get_route(route_name)
         
-        # 获取对应的 improver class
-        improver_cls = IMPROVER_MINIONS.get(improve_route.value)
         if improver_cls:
             improver = improver_cls(
                 input=self.input, 
                 brain=self.brain,
                 worker=self
             )
-            return await improver.execute()
+            self.answer = await improver.execute()
+            return self.answer
         
         # fallback
-        return await self.execute()
+        self.answer = await self.execute()
+        return self.answer
diff --git a/minion/main/prompt.py b/minion/main/prompt.py
index 66abbc34..04caeb06 100644
--- a/minion/main/prompt.py
+++ b/minion/main/prompt.py
@@ -405,6 +405,15 @@
                 please ensure you correctly indent the code, and don't use // as comment
                 """
 )
+#try not to use sympy
+PYTHON_PROMPT = (
+    """
+    Write python code to solve the problem, also noted the python program must print out answer"""
+    + COMMON_ERROR
+    + """Please ensure all the variables are defined, don't use variables before defining them
+                please ensure you correctly indent the code, and don't use // as comment
+                """
+)
 tmp = """
 {% if input.full_output %}
 Full Output: