Why does WeChat vibrate when sending messages and typing?

As the mobile phone is set with touch screen vibration, the closing method is as follows:

Step 1: Take Xiaomi mobile phone as an example, select and click the "Settings" button on the desktop.

Step 2: Find the "Sound and Vibration" button in the "Personal Hundred" option in the pop-up menu window of the notification bar, and click OK.

Step 3: In the pop-up menu window of the "Sound and Vibration" notification bar, select the "Vibration when Touched" button under the "Vibration" bar.

Step 4: Select the "Close" button in the pop-up window.