How to set screen time management for mobile phones?

The method for setting the usage time of the mobile phone screen is as follows:

Tools/raw materials: OPPO enjoys 10s, EMUI 10, setting 1.0.

1. First, we turn on the phone and click Open Settings.

2. Next, we click to open the phone for healthy use.

3. Then, we click to open the available time.

4. Finally, we can set the corresponding screen usage time.