diff --git a/common/system.py b/common/system.py
index bc10b68f51c36a1d5ab72ab780f5dfd38bfcc380..f2f32942a112d329a8e04ebada38d5e129b57198 100644
--- a/common/system.py
+++ b/common/system.py
@@ -165,16 +165,16 @@ class System(object):
             return True
 
         # self.bodies = list(filter(valid_body, self.bodies))
-
-        for body1 in self.bodies:
-            if body1.ignore_mass:
-                continue
+        valid_bodies = list(filter(lambda b:not b.ignore_mass, self.bodies))
+        for body1 in valid_bodies:
+            # if body1.ignore_mass:
+            #     continue
             if not valid_body(body1):
                 continue
             acceleration = np.zeros(3)
-            for body2 in self.bodies:
-                if body2.ignore_mass:
-                    continue
+            for body2 in valid_bodies:
+                # if body2.ignore_mass:
+                #     continue
                 if self.max_distance > 0:
                     if calculate_distance(body1.position) > self.max_distance:  # 超过了max_distance距离，则消失
                         body1.appeared = False
diff --git a/sim_scenes/science/earth_seasons.py b/sim_scenes/science/earth_seasons.py
index b9a99609f8b488477ae313aa2e476bed031c0d63..6d9c79df50bd39e31987e46d9a14a77379b79d9b 100644
--- a/sim_scenes/science/earth_seasons.py
+++ b/sim_scenes/science/earth_seasons.py
@@ -8,7 +8,7 @@
 # ==============================================================================
 from bodies import Sun, Earth
 from common.consts import SECONDS_PER_WEEK, SECONDS_PER_DAY, AU
-from sim_scenes.func import ursina_run
+from sim_scenes.func import ursina_run, camera_look_at
 from simulators.ursina.entities.body_timer import TimeData
 from simulators.ursina.ursina_event import UrsinaEvent
 from ursina import camera
@@ -77,15 +77,14 @@ if __name__ == '__main__':
         """
         for e in [earth_1, earth_2, earth_3, earth_4]:
             if term_name == e.name:
-                e.planet.name_text.enabled = False
+                e.name_text.enabled = False
             else:
-                e.planet.name_text.enabled = True
+                e.name_text.enabled = True
 
 
     def on_timer_changed(time_data: TimeData):
         # 摄像机始终看向移动的地球
-        camera.look_at(earth.planet)
-        camera.rotation_z = 0
+        camera_look_at(earth, rotation_z=0)
         # 根据角度范围判断，显示中国农历24节气
         for info in solar_terms_angles:
             if info[1] <= camera.rotation_y < info[2]:
@@ -93,7 +92,7 @@ if __name__ == '__main__':
                 # 控制4个透明地球文本是否显示，防止地球文字的叠加
                 earth_text_dispaly(term_name)
                 # 地球名称文字显示为相应的节气
-                earth.planet.name_text.text = term_name
+                earth.name_text.text = term_name
         # print(camera.rotation_y)
 
 
diff --git a/simulators/ursina/entities/entity_utils.py b/simulators/ursina/entities/entity_utils.py
index 152f3e0ec3f48560d8768783279fcf697c070ea0..617540a2142d05e9faab5b6ce184f993440f3e36 100644
--- a/simulators/ursina/entities/entity_utils.py
+++ b/simulators/ursina/entities/entity_utils.py
@@ -41,6 +41,7 @@ def create_name_text(parent):
     name_text.set_light_off()
     name_text.color = color.rgba(text_color[0], text_color[1], text_color[2], 1)
     parent.name_text = name_text
+    parent.body.name_text = name_text
     return name_text