diff --git a/app_spec.yml b/app_spec.yml
index cec0598..ac78b7f 100644
--- a/app_spec.yml
+++ b/app_spec.yml
@@ -1,6 +1,6 @@
 input:
   things:
-    name: things
+    name: wish
     value_type: str
     description: ''
   pray:
diff --git a/handler.py b/handler.py
index 7696a24..7b253ff 100644
--- a/handler.py
+++ b/handler.py
@@ -1,3 +1,5 @@
+from yi import YiProgram
+
 def handle(conf):
     """
     该方法是部署之后，其他人调用你的服务时候的处理方法。
@@ -8,9 +10,24 @@
     参数请放到params字典中，我们会自动解析该变量。
     """
 
-    wish = conf['things']  # value_type: str # description: some description
+    wish = conf['wish']  # value_type: str # description: some description
     pray = conf['pray']
 
+    obj = YiProgram()
+    turn_symbol_desc, main_indicate, support_indicate = obj.predict(wish, pray)
+
     # add your code
-    return {'ret1': 'cat', 'ret2': 'dog'}
+    return {
+        'turn_symbol_desc': turn_symbol_desc,
+        'main_indicate': main_indicate,
+        'support_indicate': support_indicate
+    }
+
+if __name__ == '__main__':
+    conf = {
+        'wish': '恋爱',
+        'pray': '找到对象',
+    }
+    results = handle(conf)
+    print(results)
     diff --git a/yi.py b/yi.py
index 2a27686..9590517 100644
--- a/yi.py
+++ b/yi.py
@@ -162,8 +162,31 @@
               f"辅预言：{support_indicate}")
     
     def predict(self, wish: str, pray: str):
-         today = datetime.datetime.now().__format__("%Y%m%d")
-         time_seed_str = wish + pray + today
+        '''
+        Divination.
+
+        Args:
+            wish(str)
+            pray(str)
+        
+        Returns:
+            turn_symbol_desc(str)
+            main_indicate(str)
+            support_indicate(str)
+        '''
+        today = datetime.datetime.now().__format__("%Y%m%d")
+        time_seed_str = wish + pray + today
+        self._set_random_seed(time_seed_str)
+         
+        # 生成本卦和变卦
+        origin_hexagram = self._gen_origin_hexagram()
+        support_hexagram = self._gen_support_hexagram(origin_hexagram)
+        origin_hexagram_dict_key = self._get_hexagram_dict_key(origin_hexagram)
+        support_hexagram_dict_key = self._get_hexagram_dict_key(support_hexagram)
+        turn_symbol_desc, main_indicate, support_indicate = self._parser_hexagram(origin_hexagram, support_hexagram)
+
+        return turn_symbol_desc, main_indicate, support_indicate
+
 
 if __name__ == "__main__":
     obj = YiProgram()