diff --git a/src/UserGuide/Master/Table/User-Manual/Data-Sync_timecho.md b/src/UserGuide/Master/Table/User-Manual/Data-Sync_timecho.md
index 32bd1fafa..7e6894a75 100644
--- a/src/UserGuide/Master/Table/User-Manual/Data-Sync_timecho.md
+++ b/src/UserGuide/Master/Table/User-Manual/Data-Sync_timecho.md
@@ -468,19 +468,20 @@ WITH SINK (
 )
 ```
 
-**Notes: Currently supported gateway models**
+**Note:**
+* When creating a pipe for synchronization across a network gap (data diode), you must ensure that the target user on the receiving end already exists. If the receiving-end user is missing at the time of pipe creation, data prior to the subsequent creation of that user will not be synchronized.
+* Currently supported network gap device models are listed in the table below.
 > For other models of network gateway devices, Please contact timechodb staff to confirm compatibility.
 
-| Gateway Type           | Model                                                        | Return Packet Limit | Send Limit             |
-| ---------------------- | ------------------------------------------------------------ | ------------------- | ---------------------- |
-| Forward Gate         | NARI Syskeeper-2000 Forward Gate                         | All 0 / All 1 bytes | No Limit               |
-| Forward Gate         | XJ Self-developed Diaphragm                                  | All 0 / All 1 bytes | No Limit               |
-| Unknown     | WISGAP         | No Limit            | No Limit               |
+| Gateway Type           | Model                                                      | Return Packet Limit | Send Limit             |
+| ---------------------- | ---------------------------------------------------------- | ------------------- | ---------------------- |
+| Forward Gate         | NARI Syskeeper-2000 Forward Gate                       | All 0 / All 1 bytes | No Limit               |
+| Forward Gate         | XJ Self-developed Diaphragm                                | All 0 / All 1 bytes | No Limit               |
+| Unknown     | WISGAP        | No Limit            | No Limit               |
 | Forward Gate         | KEDONG StoneWall-2000 Network Security Isolation Device | No Limit            | No Limit               |
-| Reverse Gate      | NARI Syskeeper-2000 Reverse Direction                      | All 0 / All 1 bytes | Meet E Language Format |
-| Unknown     | DPtech ISG5000                                      | No Limit            | No Limit               |
-| Unknown     | GAP‌‌
- XL—GAP    | No Limit            | No Limit               |
+| Reverse Gate      | NARI Syskeeper-2000 Reverse Direction                    | All 0 / All 1 bytes | Meet E Language Format |
+| Unknown     | DPtech ISG5000                                    | No Limit            | No Limit               |
+| Unknown     | GAP XL—GAP    | No Limit            | No Limit               |
  
 ### 3.7 Compressed Synchronization
 
diff --git a/src/UserGuide/Master/Tree/User-Manual/Data-Sync_timecho.md b/src/UserGuide/Master/Tree/User-Manual/Data-Sync_timecho.md
index 1653f64d8..acd3a32fc 100644
--- a/src/UserGuide/Master/Tree/User-Manual/Data-Sync_timecho.md
+++ b/src/UserGuide/Master/Tree/User-Manual/Data-Sync_timecho.md
@@ -477,19 +477,20 @@ with sink (
   'sink'='iotdb-air-gap-sink',
   'node-urls' = '10.53.53.53:9780', -- The URL of the data service port of the DataNode node on the target IoTDB
 ```
-**Notes: Currently supported gateway models**
+**Note:**
+* When creating a pipe for synchronization across a network gap (data diode), you must ensure that the target user on the receiving end already exists. If the receiving-end user is missing at the time of pipe creation, data prior to the subsequent creation of that user will not be synchronized.
+* Currently supported network gap device models are listed in the table below.
 > For other models of network gateway devices, Please contact timechodb staff to confirm compatibility.
 
-| Gateway Type           | Model                                                        | Return Packet Limit | Send Limit             |
-| ---------------------- | ------------------------------------------------------------ | ------------------- | ---------------------- |
-| Forward Gate         | NARI Syskeeper-2000 Forward Gate                         | All 0 / All 1 bytes | No Limit               |
-| Forward Gate         | XJ Self-developed Diaphragm                                  | All 0 / All 1 bytes | No Limit               |
-| Unknown     | WISGAP         | No Limit            | No Limit               |
-| Forward Gate         | KEDONG StoneWall-2000 Network Security Isolation Device | No Limit            | No Limit               |
-| Reverse Gate      | NARI Syskeeper-2000 Reverse Direction                      | All 0 / All 1 bytes | Meet E Language Format |
-| Unknown     | DPtech ISG5000                                      | No Limit            | No Limit               |
-| Unknown     | GAP‌‌
- XL—GAP    | No Limit            | No Limit               |
+| Gateway Type | Model                                               | Return Packet Limit | Send Limit             |
+|--------------|-----------------------------------------------------|---------------------| ---------------------- |
+| Forward Gate | NARI Syskeeper-2000 Forward Gate                    | All 0 / All 1 bytes | No Limit               |
+| Forward Gate | XJ Self-developed Diaphragm                         | All 0 / All 1 bytes | No Limit               |
+| Unknown      | WISGAP                                              | No Limit            | No Limit               |
+| Forward Gate | KEDONG StoneWall-2000 Network Security Isolation Device | No Limit            | No Limit               |
+| Reverse Gate | NARI Syskeeper-2000 Reverse Direction               | All 0 / All 1 bytes | Meet E Language Format |
+| Unknown      | DPtech ISG5000                                      | No Limit            | No Limit               |
+| Unknown      | GAP XL—GAP                                       | No Limit            | No Limit               |
 
 
 ### 3.7 Compression Synchronization (V1.3.3+)
diff --git a/src/UserGuide/latest-Table/User-Manual/Data-Sync_timecho.md b/src/UserGuide/latest-Table/User-Manual/Data-Sync_timecho.md
index 32bd1fafa..7e6894a75 100644
--- a/src/UserGuide/latest-Table/User-Manual/Data-Sync_timecho.md
+++ b/src/UserGuide/latest-Table/User-Manual/Data-Sync_timecho.md
@@ -468,19 +468,20 @@ WITH SINK (
 )
 ```
 
-**Notes: Currently supported gateway models**
+**Note:**
+* When creating a pipe for synchronization across a network gap (data diode), you must ensure that the target user on the receiving end already exists. If the receiving-end user is missing at the time of pipe creation, data prior to the subsequent creation of that user will not be synchronized.
+* Currently supported network gap device models are listed in the table below.
 > For other models of network gateway devices, Please contact timechodb staff to confirm compatibility.
 
-| Gateway Type           | Model                                                        | Return Packet Limit | Send Limit             |
-| ---------------------- | ------------------------------------------------------------ | ------------------- | ---------------------- |
-| Forward Gate         | NARI Syskeeper-2000 Forward Gate                         | All 0 / All 1 bytes | No Limit               |
-| Forward Gate         | XJ Self-developed Diaphragm                                  | All 0 / All 1 bytes | No Limit               |
-| Unknown     | WISGAP         | No Limit            | No Limit               |
+| Gateway Type           | Model                                                      | Return Packet Limit | Send Limit             |
+| ---------------------- | ---------------------------------------------------------- | ------------------- | ---------------------- |
+| Forward Gate         | NARI Syskeeper-2000 Forward Gate                       | All 0 / All 1 bytes | No Limit               |
+| Forward Gate         | XJ Self-developed Diaphragm                                | All 0 / All 1 bytes | No Limit               |
+| Unknown     | WISGAP        | No Limit            | No Limit               |
 | Forward Gate         | KEDONG StoneWall-2000 Network Security Isolation Device | No Limit            | No Limit               |
-| Reverse Gate      | NARI Syskeeper-2000 Reverse Direction                      | All 0 / All 1 bytes | Meet E Language Format |
-| Unknown     | DPtech ISG5000                                      | No Limit            | No Limit               |
-| Unknown     | GAP‌‌
- XL—GAP    | No Limit            | No Limit               |
+| Reverse Gate      | NARI Syskeeper-2000 Reverse Direction                    | All 0 / All 1 bytes | Meet E Language Format |
+| Unknown     | DPtech ISG5000                                    | No Limit            | No Limit               |
+| Unknown     | GAP XL—GAP    | No Limit            | No Limit               |
  
 ### 3.7 Compressed Synchronization
 
diff --git a/src/UserGuide/latest/User-Manual/Data-Sync_timecho.md b/src/UserGuide/latest/User-Manual/Data-Sync_timecho.md
index 1653f64d8..acd3a32fc 100644
--- a/src/UserGuide/latest/User-Manual/Data-Sync_timecho.md
+++ b/src/UserGuide/latest/User-Manual/Data-Sync_timecho.md
@@ -477,19 +477,20 @@ with sink (
   'sink'='iotdb-air-gap-sink',
   'node-urls' = '10.53.53.53:9780', -- The URL of the data service port of the DataNode node on the target IoTDB
 ```
-**Notes: Currently supported gateway models**
+**Note:**
+* When creating a pipe for synchronization across a network gap (data diode), you must ensure that the target user on the receiving end already exists. If the receiving-end user is missing at the time of pipe creation, data prior to the subsequent creation of that user will not be synchronized.
+* Currently supported network gap device models are listed in the table below.
 > For other models of network gateway devices, Please contact timechodb staff to confirm compatibility.
 
-| Gateway Type           | Model                                                        | Return Packet Limit | Send Limit             |
-| ---------------------- | ------------------------------------------------------------ | ------------------- | ---------------------- |
-| Forward Gate         | NARI Syskeeper-2000 Forward Gate                         | All 0 / All 1 bytes | No Limit               |
-| Forward Gate         | XJ Self-developed Diaphragm                                  | All 0 / All 1 bytes | No Limit               |
-| Unknown     | WISGAP         | No Limit            | No Limit               |
-| Forward Gate         | KEDONG StoneWall-2000 Network Security Isolation Device | No Limit            | No Limit               |
-| Reverse Gate      | NARI Syskeeper-2000 Reverse Direction                      | All 0 / All 1 bytes | Meet E Language Format |
-| Unknown     | DPtech ISG5000                                      | No Limit            | No Limit               |
-| Unknown     | GAP‌‌
- XL—GAP    | No Limit            | No Limit               |
+| Gateway Type | Model                                               | Return Packet Limit | Send Limit             |
+|--------------|-----------------------------------------------------|---------------------| ---------------------- |
+| Forward Gate | NARI Syskeeper-2000 Forward Gate                    | All 0 / All 1 bytes | No Limit               |
+| Forward Gate | XJ Self-developed Diaphragm                         | All 0 / All 1 bytes | No Limit               |
+| Unknown      | WISGAP                                              | No Limit            | No Limit               |
+| Forward Gate | KEDONG StoneWall-2000 Network Security Isolation Device | No Limit            | No Limit               |
+| Reverse Gate | NARI Syskeeper-2000 Reverse Direction               | All 0 / All 1 bytes | Meet E Language Format |
+| Unknown      | DPtech ISG5000                                      | No Limit            | No Limit               |
+| Unknown      | GAP XL—GAP                                       | No Limit            | No Limit               |
 
 
 ### 3.7 Compression Synchronization (V1.3.3+)
diff --git a/src/zh/UserGuide/Master/Table/User-Manual/Data-Sync_timecho.md b/src/zh/UserGuide/Master/Table/User-Manual/Data-Sync_timecho.md
index f8e8f1624..bcd6d517c 100644
--- a/src/zh/UserGuide/Master/Table/User-Manual/Data-Sync_timecho.md
+++ b/src/zh/UserGuide/Master/Table/User-Manual/Data-Sync_timecho.md
@@ -461,7 +461,9 @@ with sink (
   'node-urls' = '10.53.53.53:9780', -- 目标端 IoTDB 中 DataNode 节点的数据服务端口的 url
 )
 ```
-**注意：目前支持的网闸型号**
+**注意：**
+* 跨网闸同步创建 pipe 时，必须确保接收端目标用户已存在。若创建 pipe 时接收端用户缺失，后续补建用户也无法同步此前数据。
+* 目前支持的网闸型号见下表
 > 其他型号的网闸设备，请与天谋商务联系确认是否支持。
 
 | 网闸类型     | 网闸型号                                     | 回包限制          | 发送限制        |
diff --git a/src/zh/UserGuide/Master/Tree/User-Manual/Data-Sync_timecho.md b/src/zh/UserGuide/Master/Tree/User-Manual/Data-Sync_timecho.md
index 8ef189055..8333d18fc 100644
--- a/src/zh/UserGuide/Master/Tree/User-Manual/Data-Sync_timecho.md
+++ b/src/zh/UserGuide/Master/Tree/User-Manual/Data-Sync_timecho.md
@@ -473,7 +473,9 @@ with sink (
   'node-urls' = '10.53.53.53:9780', -- 目标端 IoTDB 中 DataNode 节点的数据服务端口的 url
 )
 ```
-**注意：目前支持的网闸型号**
+**注意：**
+* 跨网闸同步创建 pipe 时，必须确保接收端目标用户已存在。若创建 pipe 时接收端用户缺失，后续补建用户也无法同步此前数据。
+* 目前支持的网闸型号见下表
 > 其他型号的网闸设备，请与天谋商务联系确认是否支持。
 
 | 网闸类型     | 网闸型号                                     | 回包限制          | 发送限制        |
diff --git a/src/zh/UserGuide/latest-Table/User-Manual/Data-Sync_timecho.md b/src/zh/UserGuide/latest-Table/User-Manual/Data-Sync_timecho.md
index f8e8f1624..bcd6d517c 100644
--- a/src/zh/UserGuide/latest-Table/User-Manual/Data-Sync_timecho.md
+++ b/src/zh/UserGuide/latest-Table/User-Manual/Data-Sync_timecho.md
@@ -461,7 +461,9 @@ with sink (
   'node-urls' = '10.53.53.53:9780', -- 目标端 IoTDB 中 DataNode 节点的数据服务端口的 url
 )
 ```
-**注意：目前支持的网闸型号**
+**注意：**
+* 跨网闸同步创建 pipe 时，必须确保接收端目标用户已存在。若创建 pipe 时接收端用户缺失，后续补建用户也无法同步此前数据。
+* 目前支持的网闸型号见下表
 > 其他型号的网闸设备，请与天谋商务联系确认是否支持。
 
 | 网闸类型     | 网闸型号                                     | 回包限制          | 发送限制        |
diff --git a/src/zh/UserGuide/latest/User-Manual/Data-Sync_timecho.md b/src/zh/UserGuide/latest/User-Manual/Data-Sync_timecho.md
index 8ef189055..8333d18fc 100644
--- a/src/zh/UserGuide/latest/User-Manual/Data-Sync_timecho.md
+++ b/src/zh/UserGuide/latest/User-Manual/Data-Sync_timecho.md
@@ -473,7 +473,9 @@ with sink (
   'node-urls' = '10.53.53.53:9780', -- 目标端 IoTDB 中 DataNode 节点的数据服务端口的 url
 )
 ```
-**注意：目前支持的网闸型号**
+**注意：**
+* 跨网闸同步创建 pipe 时，必须确保接收端目标用户已存在。若创建 pipe 时接收端用户缺失，后续补建用户也无法同步此前数据。
+* 目前支持的网闸型号见下表
 > 其他型号的网闸设备，请与天谋商务联系确认是否支持。
 
 | 网闸类型     | 网闸型号                                     | 回包限制          | 发送限制        |