If the password of the desired wireless network has changed, we can enter it later on the Xiaomi smartphone to keep connecting to the device with the settings you made. This feature is useful, for example, if you have set up proxy settings and don't want to add the wireless network again.

Android 10 (MIUI 12.0)
Step 1:  Open the  Settings
Step 2:  Tap on  Wi-Fi
Step 3:  Open the  networks settings
Step 4:  Tap on  Modify network
Step 5:  Enter the  password  and tap  Save
  1. Open the Settings
  2. Tap on Wi-Fi
  3. Open the networks settings
  4. Tap on Modify network
  5. Enter the password and tap Save

Xiaomi Instructions