diff --git a/content/self-host/pro/strategy/_index.de.md b/content/self-host/pro/strategy/_index.de.md
index 80e4029..3be3a1c 100644
--- a/content/self-host/pro/strategy/_index.de.md
+++ b/content/self-host/pro/strategy/_index.de.md
@@ -23,9 +23,11 @@ Administratoren können je nach Bedarf verschiedene Strategien `Aktivieren` oder
 
 Jedes Gerät kann nur mit einer Strategie verwaltet werden. Administratoren können die Verwaltungsstrategie eines Geräts über die Option `Geräte bearbeiten` ändern. Standardmäßig verwenden alle Geräte die Standardstrategie. Administratoren können Geräte hinzufügen oder löschen und deren Verwaltungsstrategien ändern. Wenn ein Gerät gelöscht wird, wird es wieder mit der Standardstrategie verwaltet.
 
-In der Schnittstelle zur Geräteverwaltung wird der linke Bereich zum Filtern von Geräten verwendet. Die in der rechten Spalte ausgewählten Geräte werden von der aktuellen Strategie verwaltet. Geräte, die nicht angemeldet sind, werden in der Gruppe `Null` angezeigt.
+In der Schnittstelle zur Geräteverwaltung wird der linke Bereich zum Filtern von Geräten verwendet. Die in der rechten Spalte ausgewählten Geräte werden von der aktuellen Strategie verwaltet. Geräte, die nicht angemeldet sind, werden in der Gruppe `-` angezeigt.
 
-![](/docs/en/self-host/pro/strategy/images/edit_devices.png)
+|  Benutzergruppe  |  Ungebundene Geräte  |
+| :--------------: | :------------: |
+|  ![](/docs/en/self-host/pro/strategy/images/edit_devices_group.png)    |  ![](/docs/en/self-host/pro/strategy/images/edit_devices_unbinded.png)    |
 
 ### Strategie-Synchronisation
 
diff --git a/content/self-host/pro/strategy/_index.en.md b/content/self-host/pro/strategy/_index.en.md
index 657a113..264f17d 100644
--- a/content/self-host/pro/strategy/_index.en.md
+++ b/content/self-host/pro/strategy/_index.en.md
@@ -23,9 +23,11 @@ Administrators can `Enable` or `Disable` different strategies as needed. By defa
 
 Each device can only be managed by one strategy. Administrators can change the management strategy of a device by the `Edit Devices` option. By default, all devices use the default strategy. Administrators can add or delete devices and change their management strategies. If a device is deleted, it will be managed by the default strategy again.
 
-In the device management interface, the left-hand area is used to filter devices, and the devices selected in the right-hand column will be managed by the current strategy. Devices that are not logged in will be displayed in the `null` group.
+In the device management interface, the left-hand area is used to filter devices, and the devices selected in the right-hand column will be managed by the current strategy. Devices that are not logged in will be displayed in the `-` group.
 
-![](/docs/en/self-host/pro/strategy/images/edit_devices.png)
+|  User Group  | Unbinded Devices |
+| :--------------: | :------------: |
+|  ![](/docs/en/self-host/pro/strategy/images/edit_devices_group.png)    |  ![](/docs/en/self-host/pro/strategy/images/edit_devices_unbinded.png)    |
 
 ### Strategy Synchronization
 
diff --git a/content/self-host/pro/strategy/_index.zh-cn.md b/content/self-host/pro/strategy/_index.zh-cn.md
index d250dbe..7be7291 100644
--- a/content/self-host/pro/strategy/_index.zh-cn.md
+++ b/content/self-host/pro/strategy/_index.zh-cn.md
@@ -22,9 +22,11 @@ RustDesk 提供了一个默认策略，管理员可以在此基础上进行修
 ### 管理设备
 
 每个设备只能被一种策略管理。管理员可以通过`编辑设备`来更改设备的管理策略。默认情况下，所有设备都使用默认策略。管理员可以通过添加或删除设备，更改设备的管理策略。如果设备被删除，它将重新被默认策略管理。
-在设备管理界面中，左侧区域用于筛选设备，右侧列中被选中的设备将会受到当前策略的管理。未登录的设备将会显示在`null`组中。
+在设备管理界面中，左侧区域用于筛选设备，右侧列中被选中的设备将会受到当前策略的管理。未登录的设备将会显示在`-`组中。
 
-![](/docs/en/self-host/pro/strategy/images/edit_devices.png)
+|  用户组  |  未绑定设备  |
+| :--------------: | :------------: |
+|  ![](/docs/en/self-host/pro/strategy/images/edit_devices_group.png)    |  ![](/docs/en/self-host/pro/strategy/images/edit_devices_unbinded.png)    |
 
 ### 策略同步
 
diff --git a/content/self-host/pro/strategy/images/edit_devices.png b/content/self-host/pro/strategy/images/edit_devices.png
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