When Huawei M-Pen2 function keys use the tutorial sharing screen:
The stylus clicks on the screen to enter the off-screen shorthand.
When the screen opens:
Call up the memo: long press the stylus function key and click on the screen.
Global screen capture: long press the stylus function key and double-click the screen.
Partial screen capture: long press the stylus function key to draw a circle on the screen.
Scroll screen capture: long press the stylus function key to draw an S-shape on the screen.