diff --git a/sim_scenes/earth/earth_moon.py b/sim_scenes/earth/earth_moon.py
index e5941f2d9214a821108b3239bde56dc2d5250240..08da39282715b7ff536d6df6a31c3934ee39a425 100644
--- a/sim_scenes/earth/earth_moon.py
+++ b/sim_scenes/earth/earth_moon.py
@@ -9,6 +9,7 @@
 from bodies import Earth, Moon
 from common.consts import SECONDS_PER_DAY, SECONDS_PER_WEEK, SECONDS_PER_MONTH
 from sim_scenes.func import ursina_run, camera_look_at
+from simulators.ursina.ursina_config import UrsinaConfig
 from simulators.ursina.ursina_event import UrsinaEvent
 
 if __name__ == '__main__':
@@ -24,24 +25,13 @@ if __name__ == '__main__':
     moon = Moon(init_position=[0, 0, 363104],  # 距地距离约: 363104 至 405696 km
                 init_velocity=[-1.03, 0, 0], size_scale=1e1)  # 月球放大 10 倍，距离保持不变
 
-    earth.rotation_speed /= 10
+    earth.rotation_speed /= 50  # 地球的转速降低50倍
 
     bodies = [earth, moon]
 
-
-    def on_ready():
-        # 运行前触发
-        # 摄像机看向地球
-        camera_look_at(earth)
-
-
-    # 订阅事件后，上面的函数功能才会起作用
-    # 运行前会触发 on_ready
-    UrsinaEvent.on_ready_subscription(on_ready)
-
     # 使用 ursina 查看的运行效果
     # 常用快捷键： P：运行和暂停  O：重新开始  I：显示天体轨迹
     # position = 左-右+、上+下-、前+后-
     ursina_run(bodies, SECONDS_PER_WEEK,
-               position=(-300000, 1500000, -1000),
+               position=(0, 100000, -1000000),
                show_trail=True)
diff --git a/simulators/ursina_simulator.py b/simulators/ursina_simulator.py
index 8cb5a49562ce911145c8af32b32a56bef554f460..f3e46d5b7dba791dbef00a93dde813a2459f95b6 100644
--- a/simulators/ursina_simulator.py
+++ b/simulators/ursina_simulator.py
@@ -314,9 +314,7 @@ class UrsinaSimulator(Simulator):
             if cosmic_bg is not None and os.path.exists(cosmic_bg):
                 self.cosmic_background(cosmic_bg)
 
-        # ui = UrsinaUI()
-        ctl = ControlUI(ControlHandler(), position=(0.6, 0.5))
-        ControlUI.current_ui = ctl
+
         if self.show_timer:
             self.create_timer()
 
@@ -353,6 +351,10 @@ class UrsinaSimulator(Simulator):
 
         UrsinaEvent.on_ready()
 
+        # ui = UrsinaUI()
+        ctl = ControlUI(ControlHandler(), position=(0.6, 0.5))
+        ControlUI.current_ui = ctl
+
         UrsinaEvent.after_ready()
 
         self.app.run()