diff --git a/sim_scenes/science/earth_seasons.py b/sim_scenes/science/earth_seasons.py
index ae4a969bc7b3ce2931b5d14f7fede66214a6dc27..17415e19c134cfba6f519d8101eba680c028ad97 100644
--- a/sim_scenes/science/earth_seasons.py
+++ b/sim_scenes/science/earth_seasons.py
@@ -9,7 +9,7 @@
 from bodies import Sun, Earth
 from common.consts import SECONDS_PER_WEEK, SECONDS_PER_DAY, AU
 from sim_scenes.func import ursina_run, camera_look_at
-from simulators.ursina.entities.body_timer import TimeData
+from simulators.ursina.entities.body_timer import TimeData, BodyTimer
 from simulators.ursina.ursina_event import UrsinaEvent
 from ursina import camera
 
@@ -101,7 +101,7 @@ if __name__ == '__main__':
     UrsinaEvent.on_ready_subscription(on_ready)
     # 运行中，每时每刻都会触发 on_timer_changed
     UrsinaEvent.on_timer_changed_subscription(on_timer_changed)
-
+    BodyTimer().min_unit = BodyTimer.MIN_UNIT_DAYS
     # 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-
diff --git a/sim_scenes/science/lagrangian_points_2.py b/sim_scenes/science/lagrangian_points_2.py
index 8c9d95c9c2a5d8b35a26539ffb065edc347c54ce..0630b06dd0dd419fe8d4c6acfad9e20f7d433c6d 100644
--- a/sim_scenes/science/lagrangian_points_2.py
+++ b/sim_scenes/science/lagrangian_points_2.py
@@ -73,13 +73,14 @@ if __name__ == '__main__':
         if hasattr(earth, "lines"):
             for line in earth.lines:
                 destroy(line)
-        # 创建连接线（将卫星列表用线条连接起来）
-        earth.lines = create_connecting_lines([
-            [satelliteL2, satelliteL3],
-            [satelliteL4, satelliteL1], [satelliteL5, satelliteL1],
-            [satelliteL4, satelliteL2], [satelliteL5, satelliteL2],
-            [satelliteL4, satelliteL3], [satelliteL5, satelliteL3],
-        ])
+        if int(time_data.total_hours) % 3 == 0:
+            # 创建连接线（将卫星列表用线条连接起来）
+            earth.lines = create_connecting_lines([
+                [satelliteL2, satelliteL3],
+                [satelliteL4, satelliteL1], [satelliteL5, satelliteL1],
+                [satelliteL4, satelliteL2], [satelliteL5, satelliteL2],
+                [satelliteL4, satelliteL3], [satelliteL5, satelliteL3],
+            ])
 
 
     # 订阅事件后，上面的函数功能才会起作用
diff --git a/simulators/ursina/entities/body_timer.py b/simulators/ursina/entities/body_timer.py
index 1e25bd9156c3120745767446550814f55c39882d..a57dfabcc58fc489109360f8e1ef3f1cc86ef48c 100644
--- a/simulators/ursina/entities/body_timer.py
+++ b/simulators/ursina/entities/body_timer.py
@@ -17,7 +17,7 @@ from simulators.ursina.ursina_event import UrsinaEvent
 
 
 class TimeData:
-    def __init__(self, seconds):
+    def __init__(self, seconds, min_unit):
         self.total_seconds = seconds
         # 获取到 seconds 后，通过下面的计算得到时分秒、年、天
         hours, remainder = divmod(seconds, 3600)
@@ -31,10 +31,13 @@ class TimeData:
         self.hours = int(hours)
         self.minutes = int(minutes)
         self.seconds = int(seconds)
+        self.min_unit = min_unit
 
-        if days > 1:
+        if days > 1 or years >= 1 or self.min_unit in [BodyTimer.MIN_UNIT_DAYS, BodyTimer.MIN_UNIT_YEARS]:
             s_days = str(days).rjust(3, " ")
-            if days >= 20 or years >= 1:
+            if self.min_unit in [BodyTimer.MIN_UNIT_YEARS]:
+                self.time_text = f'{self.years}年'
+            elif days >= 20 or years >= 1 or self.min_unit in [BodyTimer.MIN_UNIT_DAYS]:
                 self.time_text = f'{self.years}年{s_days}天'
             else:
                 self.time_text = f'{self.days}天 {self.hours:02d}:{self.minutes:02d}:{self.seconds:02d}'
@@ -49,7 +52,6 @@ class TimeData:
     def total_hours(self):
         return self.total_seconds / 3600
 
-
     @property
     def total_days(self):
         return self.total_hours / 24
@@ -62,6 +64,9 @@ class BodyTimer(Singleton):
        通过公式： 速度 * 时间 = 距离，获取到累计距离， self.position_sum += self.velocity_inc * dt
        最后通过公式： 时间 = 距离 / 速度， 从而得到天体运行了多长时间
     """
+    MIN_UNIT_SECONDS = "seconds"
+    MIN_UNIT_DAYS = "days"
+    MIN_UNIT_YEARS = "years"
 
     def __init__(self):
         if not hasattr(self, "inited"):
@@ -71,6 +76,7 @@ class BodyTimer(Singleton):
             UrsinaEvent.on_pause_subscription(self.pause)
             UrsinaEvent.on_start_subscription(self.start)
             self.inited = True
+            self.min_unit = BodyTimer.MIN_UNIT_SECONDS
 
     def pause(self):
         pass
@@ -107,7 +113,7 @@ class BodyTimer(Singleton):
         #     time_text = f'{int(hours):02d}:{int(minutes):02d}:{int(seconds):02d}'
 
         # print(self.text)
-        UrsinaEvent.on_timer_changed(TimeData(seconds))
+        UrsinaEvent.on_timer_changed(TimeData(seconds, self.min_unit))
 
     def ignore_gravity(self, body):
         return True