How does oppo display the lunar calendar on the screen

Take the OPPO R9 plus mobile phone as an example, and the setting method is as follows:

First, open the OPPO R9 plus phone, slide two fingers in the middle of the blank space of the desktop at the same time, then find the item "Desktop Plug-in" and click Enter.

Second, after entering the desktop plug-in, select the "China Calendar" option.

Third, then select the mode.

Fourth, after the pattern is completed, choose the placement position on the desktop.

Fifth, the lunar calendar is set on the desktop.