How to import the contents of the old mobile phone into the new mobile phone of Xiaomi mobile phone?

Xiaomi 1 1, MIUI 12, set v3.1131524, Xiaomi mutual transmission 2.0.

1. Go to the settings page of the mobile phone and click the option of my device.

2. Go to my device page, and click the Xiaomi switch option.

3. On the old mobile phone, click the icon of the old mobile phone.

4. Click the icon of the new mobile phone on the new Xiaomi mobile phone.

5. Enter the page of selecting the old mobile phone type, click Xiaomi's option, scan the QR code on the screen of the old mobile phone, and select the file to start transmission.