Why did S7 Apple Watch suddenly become handwritten?

S7 Apple Watch becomes handwriting, which is selected in the settings.

Can be set as keyboard input.

First, open the setting options in the home screen. Find "General" in the settings and click General Options. Drag down to find keyboard options. In the keyboard, select the keyboard option followed by a number. When it opens, press the "Add New Keyboard" option at the bottom. There is a "Simplified Chinese Handwriting" setting hook, which is OK.