Xiaomi, how to set the long press recognition character?

System: miui12.0.11.

1. Open the system settings and drag the page to the bottom to find the featured function.

2. After entering the featured function page, find the entrance.

3. Click the button in the upper right corner to open the portal function.

4.Portal can identify special nouns in a paragraph, which can be set in the following classification settings.

5. In this way, you can hold down the selected text.