diff --git a/images/1.png b/images/1.png
index 7dcf7d6091029c40b6ec4e907c13fcf1ef373a53..74e8ee50dae19e153086569efdfecd9f35979e6e 100644
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diff --git a/images/2.png b/images/2.png
index 7c7b22eee0eef5a2ae2f5aa0c38f1b271e1499f2..22489891abee3fa47b43a57831a406b33a7c7d74 100644
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diff --git a/images/3.png b/images/3.png
index dfff7422ff200818f9bb9422c7d0931faf6a7452..43c4346da4c3bb0cc43e736cadf1e5bccdac5af3 100644
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diff --git a/sim_scenes/solar_system/solar_system_1.py b/sim_scenes/solar_system/solar_system_1.py
index cf02be0c419bb14de900986699edfb712ffcb7b9..f2a0731c75c6e0d7ea5d17d98afa5cafc9ffb864 100644
--- a/sim_scenes/solar_system/solar_system_1.py
+++ b/sim_scenes/solar_system/solar_system_1.py
@@ -20,7 +20,7 @@ if __name__ == '__main__':
     #  以下展示的效果为太阳系真实的距离
     #  由于宇宙空间尺度非常大，如果按照实际的天体大小，则无法看到天体，因此需要对天体的尺寸进行放大
     sun = Sun(name="太阳", size_scale=0.8e2)       # 太阳放大 80 倍，距离保持不变
-    sun.init_velocity = [0, 0, 2]                # 太阳带着其他行星一起跑
+    # sun.init_velocity = [0, 0, 2]                # 太阳带着其他行星一起跑
     bodies = [
         sun,
         Mercury(name="水星", size_scale=4e3),      # 水星放大 4000 倍，距离保持不变
diff --git a/simulators/ursina/ui/control_handler.py b/simulators/ursina/ui/control_handler.py
index a6fefe4918ca3e2492edf5723495c177b9a792a9..d508ae140256d1e6b085fc014a5994e835a074db 100644
--- a/simulators/ursina/ui/control_handler.py
+++ b/simulators/ursina/ui/control_handler.py
@@ -223,9 +223,9 @@ class ControlHandler(EventHandler):
                 self.ui.on_off_switch.value = self.ui.pause_button_text
             self.on_off_switch_changed()
         elif key == '+' or key == "= up":
-            self.slider_increase(self.ui.slider_run_speed_factor)
+            self.slider_increase(self.ui.slider_run_speed_factor, 0.1)
         elif key == '-' or key == "- up":
-            self.slider_decrease(self.ui.slider_run_speed_factor)
+            self.slider_decrease(self.ui.slider_run_speed_factor, 0.1)
         elif key == 'n':
             import math
             # min=0.01, max=20