How do oppo phones view calendars with yellow calendars?

Setting method for locking the screen to display lunar calendar date: 1, ColorOS 12 and above: "Settings"; Desktop and lock screen show the lunar calendar.

2. Coloros11-11.3 version: "Settings"; Desktop, lock screen and information screen "Lock screen displays lunar calendar (displays lunar calendar)".

Due to different models and system versions, the operation path may be slightly different, please refer to the actual operation interface display of the mobile phone.

This answer applies to all OPPO models.