When opening the browser-app on the Xiaomi smartphone, the default home page with various shortcuts and services appears, which we can change and add a search engine like Google or Bing, for example.

Android 10 (MIUI 12.0)
Step 1:  Open the  Mi Browser app
Step 2:  Tap on  Profile
Step 3:  Open the  Settings
Step 4:  Tap on  Advanced
Step 5:  Tap on  Set start page
Step 6:  Tap on  Custom
Step 7:  Enter the  web address/URL  and tap  OK
  1. Open the Mi Browser app
  2. Tap on Profile
  3. Open the Settings
  4. Tap on Advanced
  5. Tap on Set start page
  6. Tap on Custom
  7. Enter the web address/URL and tap OK

Xiaomi Instructions