How does oppo mobile phone subscribe to the yellow calendar without displaying it?

1. First of all, the oppo mobile phone subscription almanac is not displayed. First, open the calendar on the mobile phone, and see that there is no yellow calendar displayed here, and then find the setting function.

2. Secondly, click Settings to enter the settings list interface, slide the window to find the calendar function, and click Calendar to enter the calendar window.

3. Finally, click the "Open" button to display the China Gregorian calendar.