diff --git a/en/application-dev/device/device-location-overview.md b/en/application-dev/device/device-location-overview.md
index aa619c4549083521dd6ac5bcc05795074adc9af4..eed1b8cf5d9c0d58fab848c76addffd2051c87d3 100644
--- a/en/application-dev/device/device-location-overview.md
+++ b/en/application-dev/device/device-location-overview.md
@@ -32,14 +32,8 @@ Location awareness helps determine where a mobile device locates. The system ide
 Location awareness is offered by the system as a basic service for applications. Depending on the service scenario, an application needs to initiate a location request to the system and stop the location request when the service scenario ends. In this process, the system reports the location information to the application on a real-time basis.
 
 
-## Limitations and Constraints
+## Constraints
 
 Your application can use the location function only after the user has granted the permission and turned on the function. If the location function is off, the system will not provide the location service for any application.
 
-Since the location information is considered sensitive, your application still needs to obtain the location access permission from the user even if the user has turned on the location function. The system will provide the location service for your application only after it has been granted the permission to access the device location information.
-
-## Samples
-
-The following sample is provided to help you better understand how to develop location services:
-
--[`Location`: Location (eTS) (API9)](https://gitee.com/openharmony/applications_app_samples/tree/master/device/Location)
+Since the location information is considered sensitive, your application still needs to obtain the location access permission from the user even if the user has turned on the location function. The system will provide the location service for your application only after it has been granted the permission to access the device location information.
\ No newline at end of file
diff --git a/en/application-dev/device/usb-guidelines.md b/en/application-dev/device/usb-guidelines.md
index e026109ca3d34b44f69d2ae4752425febbd2116c..d51625ccb9605fe2fb35b95f71eebc4e1607b753 100644
--- a/en/application-dev/device/usb-guidelines.md
+++ b/en/application-dev/device/usb-guidelines.md
@@ -30,7 +30,7 @@ The following table lists the USB APIs currently available. For details, see the
 
 ## How to Develop
 
-You can set a USB device as a host to connect to a device for data transfer. The development procedure is as follows:
+You can set a USB device as the USB host to connect to other USB devices for data transfer. The development procedure is as follows:
 
 1.  Obtain the USB device list.
 
diff --git a/en/application-dev/reference/apis/js-apis-hisysevent.md b/en/application-dev/reference/apis/js-apis-hisysevent.md
index 5564b1a7fc8024284fabf6ada9efaa08f8d0cb73..c045343ec23662b3897f96208cac920180a4c877 100644
--- a/en/application-dev/reference/apis/js-apis-hisysevent.md
+++ b/en/application-dev/reference/apis/js-apis-hisysevent.md
@@ -1,6 +1,6 @@
 # System Event Logging
 
-Provides system event logging APIs for system HAP applications.
+This module provides system event logging APIs for system HAP applications.
 
 > **NOTE**<br>
 > - The initial APIs of this module are supported since API version 9. Newly added APIs will be marked with a superscript to indicate their earliest API version.
@@ -87,9 +87,9 @@ Writes event information to the event file. This API uses a promise to return th
 
 **Parameters**
 
-| Name   | Type                   | Mandatory| Description|
-| --------- | ----------------------- | ---- | --------------- |
-| eventType | [EventType](#eventtype) | Yes  | Application event type.|
+| Name   | Type                | Mandatory | Description |
+| ------ | ------------------- | --------- | ----------- |
+| info | [SysEventInfo](#syseventinfo) | Yes | System event. |
 
 **Return value**
 
diff --git a/en/application-dev/reference/apis/js-apis-usb.md b/en/application-dev/reference/apis/js-apis-usb.md
index 8979bdeefaaebbd77e0e17bd094313025155527b..8249a93e8c096f2b4d69767b40642f315f26c642 100644
--- a/en/application-dev/reference/apis/js-apis-usb.md
+++ b/en/application-dev/reference/apis/js-apis-usb.md
@@ -94,14 +94,16 @@ Before you do this, call [usb.getDevices](#usbgetdevices) to obtain the USB devi
 **System capability**: SystemCapability.USB.USBManager
 
 **Parameters**
-  | Name| Type| Mandatory| Description|
-  | -------- | -------- | -------- | -------- |
-  | device | [USBDevice](#usbdevice) | Yes| USB device information.|
+
+| Name| Type| Mandatory| Description|
+| -------- | -------- | -------- | -------- |
+| device | [USBDevice](#usbdevice) | Yes| USB device information.|
 
 **Return value**
-  | Type| Description|
-  | -------- | -------- |
-  | Readonly&lt;[USBDevicePipe](#usbdevicepipe)&gt; | USB device pipe for data transfer.|
+
+| Type| Description|
+| -------- | -------- |
+| Readonly&lt;[USBDevicePipe](#usbdevicepipe)&gt; | USB device pipe for data transfer.|
 
 **Example**
 
@@ -119,14 +121,16 @@ Checks whether the application has the permission to access the device.
 **System capability**: SystemCapability.USB.USBManager
 
 **Parameters**
-  | Name| Type| Mandatory| Description|
-  | -------- | -------- | -------- | -------- |
-  | deviceName | string | Yes| Device name to set.|
+
+| Name| Type| Mandatory| Description|
+| -------- | -------- | -------- | -------- |
+| deviceName | string | Yes| Device name.|
 
 **Return value**
-  | Type| Description|
-  | -------- | -------- |
-  | boolean | Returns **true** if the application has the permission to access the device; returns **false** otherwise.|
+
+| Type| Description|
+| -------- | -------- |
+| boolean | Returns **true** if the application has the permission to access the device; returns **false** otherwise.|
 
 **Example**
 
@@ -140,19 +144,21 @@ console.log(bool);
 
 requestRight(deviceName: string): Promise&lt;boolean&gt;
 
-Requests the temporary permission for the application to access the USB device.
+Requests the temporary permission for the application to access the USB device. This API uses a promise to return the result.
 
 **System capability**: SystemCapability.USB.USBManager
 
 **Parameters**
-  | Name| Type| Mandatory| Description|
-  | -------- | -------- | -------- | -------- |
-  | deviceName | string | Yes| Device name to set.|
+
+| Name| Type| Mandatory| Description|
+| -------- | -------- | -------- | -------- |
+| deviceName | string | Yes| Device name.|
 
 **Return value**
-  | Type| Description|
-  | -------- | -------- |
-  | Promise&lt;boolean&gt; | Returns **true** if the temporary device access permissions are granted; returns **false** otherwise.|
+
+| Type| Description|
+| -------- | -------- |
+| Promise&lt;boolean&gt; | Promise used to return the result. The value **true** indicates that the temporary device access permissions are granted; and the value **false** indicates the opposite.|
 
 **Example**
 
@@ -174,16 +180,18 @@ Before you do this, call [usb.getDevices](#usbgetdevices) to obtain the USB devi
 **System capability**: SystemCapability.USB.USBManager
 
 **Parameters**
-  | Name| Type| Mandatory| Description|
-  | -------- | -------- | -------- | -------- |
-  | pipe | [USBDevicePipe](#usbdevicepipe) | Yes| Device pipe, which is used to determine the bus number and device address.|
-  | iface | [USBInterface](#usbinterface) | Yes| USB interface, which is used to determine the index of the interface to claim.|
-  | force | boolean | No| Whether to forcibly claim the USB interface. The default value is **false**, indicating not to forcibly claim the USB interface.|
+
+| Name| Type| Mandatory| Description|
+| -------- | -------- | -------- | -------- |
+| pipe | [USBDevicePipe](#usbdevicepipe) | Yes| Device pipe, which is used to determine the bus number and device address.|
+| iface | [USBInterface](#usbinterface) | Yes| USB interface, which is used to determine the index of the interface to claim.|
+| force | boolean | No| Whether to forcibly claim the USB interface. The default value is **false**, indicating not to forcibly claim the USB interface.|
 
 **Return value**
-  | Type| Description|
-  | -------- | -------- |
-  | number | Returns **0** if the USB interface is successfully claimed; returns an error code otherwise.|
+
+| Type| Description|
+| -------- | -------- |
+| number | Returns **0** if the USB interface is successfully claimed; returns an error code otherwise.|
 
 **Example**
 
@@ -203,15 +211,17 @@ Before you do this, ensure that you have claimed the interface by calling [usb.c
 **System capability**: SystemCapability.USB.USBManager
 
 **Parameters**
-  | Name| Type| Mandatory| Description|
-  | -------- | -------- | -------- | -------- |
-  | pipe | [USBDevicePipe](#usbdevicepipe) | Yes| Device pipe, which is used to determine the bus number and device address.|
-  | iface | [USBInterface](#usbinterface) | Yes| USB interface, which is used to determine the index of the interface to release.|
+
+| Name| Type| Mandatory| Description|
+| -------- | -------- | -------- | -------- |
+| pipe | [USBDevicePipe](#usbdevicepipe) | Yes| Device pipe, which is used to determine the bus number and device address.|
+| iface | [USBInterface](#usbinterface) | Yes| USB interface, which is used to determine the index of the interface to release.|
 
 **Return value**
-  | Type| Description|
-  | -------- | -------- |
-  | number | Returns **0** if the USB interface is successfully released; returns an error code otherwise.|
+
+| Type| Description|
+| -------- | -------- |
+| number | Returns **0** if the USB interface is successfully released; returns an error code otherwise.|
 
 **Example**
 
@@ -231,15 +241,17 @@ Before you do this, call [usb.getDevices](#usbgetdevices) to obtain the USB devi
 **System capability**: SystemCapability.USB.USBManager
 
 **Parameters**
-  | Name| Type| Mandatory| Description|
-  | -------- | -------- | -------- | -------- |
-  | pipe | [USBDevicePipe](#usbdevicepipe) | Yes| Device pipe, which is used to determine the bus number and device address.|
-  | config | [USBConfig](#usbconfig) | Yes| USB configuration to set.|
+
+| Name| Type| Mandatory| Description|
+| -------- | -------- | -------- | -------- |
+| pipe | [USBDevicePipe](#usbdevicepipe) | Yes| Device pipe, which is used to determine the bus number and device address.|
+| config | [USBConfig](#usbconfig) | Yes| USB configuration to set.|
 
 **Return value**
-  | Type| Description|
-  | -------- | -------- |
-  | number | Returns **0** if the USB configuration is successfully set; returns an error code otherwise.|
+
+| Type| Description|
+| -------- | -------- |
+| number | Returns **0** if the USB configuration is successfully set; returns an error code otherwise.|
 
 **Example**
 
@@ -266,9 +278,10 @@ Before you do this, call [usb.getDevices](#usbgetdevices) to obtain the USB devi
 | iface | [USBInterface](#usbinterface)   | Yes  | USB interface to set. |
 
 **Return value**
-  | Type| Description|
-  | -------- | -------- |
-  | number | Returns **0** if the USB interface is successfully set; returns an error code otherwise.|
+
+| Type| Description|
+| -------- | -------- |
+| number | Returns **0** if the USB interface is successfully set; returns an error code otherwise.|
 
 **Example**
 
@@ -289,11 +302,12 @@ Before you do this, call [usb.getDevices](#usbgetdevices) to obtain the USB devi
 
 **Parameters**
 
-  | Name| Type| Mandatory| Description|
-  | -------- | -------- | -------- | -------- |
-  | pipe | [USBDevicePipe](#usbdevicepipe) | Yes| Device pipe, which is used to determine the bus number and device address.|
+| Name| Type| Mandatory| Description|
+| -------- | -------- | -------- | -------- |
+| pipe | [USBDevicePipe](#usbdevicepipe) | Yes| Device pipe, which is used to determine the bus number and device address.|
 
 **Return value**
+
 | Type| Description|
 | -------- | -------- |
 | Uint8Array | Returns the raw USB descriptor if the operation is successful; returns **undefined** otherwise.|
@@ -315,9 +329,10 @@ Before you do this, call [usb.getDevices](#usbgetdevices) to obtain the USB devi
 **System capability**: SystemCapability.USB.USBManager
 
 **Parameters**
-  | Name| Type| Mandatory| Description|
-  | -------- | -------- | -------- | -------- |
-  | pipe | [USBDevicePipe](#usbdevicepipe) | Yes| Device pipe, which is used to determine the bus number and device address.|
+
+| Name| Type| Mandatory| Description|
+| -------- | -------- | -------- | -------- |
+| pipe | [USBDevicePipe](#usbdevicepipe) | Yes| Device pipe, which is used to determine the bus number and device address.|
 
 **Return value**
 
@@ -342,16 +357,18 @@ Before you do this, call [usb.getDevices](#usbgetdevices) to obtain the USB devi
 **System capability**: SystemCapability.USB.USBManager
 
 **Parameters**
-  | Name| Type| Mandatory| Description|
-  | -------- | -------- | -------- | -------- |
-  | pipe | [USBDevicePipe](#usbdevicepipe) | Yes| USB device pipe, which is used to determine the USB device.|
-  | contrlparam | [USBControlParams](#usbcontrolparams) | Yes| Control transfer parameters.|
-  | timeout | number | No| Timeout duration. The default value is **0**, indicating no timeout.|
+
+| Name| Type| Mandatory| Description|
+| -------- | -------- | -------- | -------- |
+| pipe | [USBDevicePipe](#usbdevicepipe) | Yes| USB device pipe, which is used to determine the USB device.|
+| contrlparam | [USBControlParams](#usbcontrolparams) | Yes| Control transfer parameters.|
+| timeout | number | No| Timeout duration in ms. This parameter is optional. The default value is **0**, indicating no timeout.|
 
 **Return value**
-  | Type| Description|
-  | -------- | -------- |
-  | Promise&lt;number&gt; | Returns the size of the transmitted or received data block if the control transfer is successful; returns **-1** if an exception occurs.|
+
+| Type| Description|
+| -------- | -------- |
+| Promise&lt;number&gt; | Promise used to return the result, which is the size of the transmitted or received data block if the transfer is successful, or **-1** if an exception has occurred.|
 
 **Example**
 
@@ -372,17 +389,19 @@ Before you do this, call [usb.getDevices](#usbgetdevices) to obtain the USB devi
 **System capability**: SystemCapability.USB.USBManager
 
 **Parameters**
-  | Name| Type| Mandatory| Description|
-  | -------- | -------- | -------- | -------- |
-  | pipe | [USBDevicePipe](#usbdevicepipe) | Yes| USB device pipe, which is used to determine the USB device.|
-  | endpoint | [USBEndpoint](#usbendpoint) | Yes| USB endpoint, which is used to determine the USB port for data transfer.|
-  | buffer | Uint8Array | Yes| Buffer for writing or reading data.|
-  | timeout | number | No| Timeout duration. The default value is **0**, indicating no timeout.|
+
+| Name| Type| Mandatory| Description|
+| -------- | -------- | -------- | -------- |
+| pipe | [USBDevicePipe](#usbdevicepipe) | Yes| USB device pipe, which is used to determine the USB device.|
+| endpoint | [USBEndpoint](#usbendpoint) | Yes| USB endpoint, which is used to determine the USB port for data transfer.|
+| buffer | Uint8Array | Yes| Buffer for writing or reading data.|
+| timeout | number | No| Timeout duration in ms. This parameter is optional. The default value is **0**, indicating no timeout.|
 
 **Return value**
-  | Type| Description|
-  | -------- | -------- |
-  | Promise&lt;number&gt; | Returns the size of the transmitted or received data block if the control transfer is successful; returns **-1** if an exception occurs.|
+
+| Type| Description|
+| -------- | -------- |
+| Promise&lt;number&gt; | Promise used to return the result, which is the size of the transmitted or received data block if the transfer is successful, or **-1** if an exception has occurred.|
 
 **Example**
 
@@ -406,14 +425,16 @@ Before you do this, call [usb.getDevices](#usbgetdevices) to obtain the USB devi
 **System capability**: SystemCapability.USB.USBManager
 
 **Parameters**
-  | Name| Type| Mandatory| Description|
-  | -------- | -------- | -------- | -------- |
-  | pipe | [USBDevicePipe](#usbdevicepipe) | Yes| USB device pipe.|
+
+| Name| Type| Mandatory| Description|
+| -------- | -------- | -------- | -------- |
+| pipe | [USBDevicePipe](#usbdevicepipe) | Yes| USB device pipe.|
 
 **Return value**
-  | Type| Description|
-  | -------- | -------- |
-  | number | Returns **0** if the USB device pipe is closed successfully; returns an error code otherwise.|
+
+| Type| Description|
+| -------- | -------- |
+| number | Returns **0** if the USB device pipe is closed successfully; returns an error code otherwise.|
 
 **Example**
 
@@ -498,8 +519,8 @@ Sets the current USB function list in Device mode.
 
 **Return value**
 
-| Type              | Description                                                  |
-| ------------------ | ------------------------------------------------------ |
+| Type              | Description                                                        |
+| ------------------ | ------------------------------------------------------------ |
 | Promise\<boolean\> | Promise used to return the result. The value **true** indicates that the operation is successful, and the value **false** indicates the opposite.|
 
 **Example**
@@ -601,8 +622,8 @@ Sets the role types supported by a specified port, which can be **powerRole** (f
 
 **Return value**
 
-| Type              | Description          |
-| ------------------ | -------------- |
+| Type              | Description                                                        |
+| ------------------ | ------------------------------------------------------------ |
 | Promise\<boolean\> | Promise used to return the result. The value **true** indicates that the operation is successful, and the value **false** indicates the opposite.|
 
 **Example**
diff --git a/zh-cn/application-dev/reference/apis/js-apis-usb.md b/zh-cn/application-dev/reference/apis/js-apis-usb.md
index 57dd4b5c13504f942af74da805dda87277c84e69..ef6e73a05db1abf0ab6dc20a3cf054274da016c2 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-usb.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-usb.md
@@ -395,7 +395,7 @@ bulkTransfer(pipe: USBDevicePipe, endpoint: USBEndpoint, buffer: Uint8Array, tim
 | pipe | [USBDevicePipe](#usbdevicepipe) | 是 | 用于确定设备。 |
 | endpoint | [USBEndpoint](#usbendpoint) | 是 | 用于确定传输的端口。 |
 | buffer | Uint8Array | 是 | 用于写入或读取的缓冲区。 |
-| timeout | number | 否 | 超时时间（单位：ms），可选参数，默认为0不超时。，可选参数，默认为0不超时。 |
+| timeout | number | 否 | 超时时间（单位：ms），可选参数，默认为0不超时。 |
 
 **返回值：**