Originally Posted by
Kmxu
There is an Mini Program on WeChat App for this health declaration form. When you arrive in China, the first formality is to scan this form, which you fill up within 24 hours, not earlier. When you exit China, you will need to fill up this form, too. I did it on the spot.
I used the MP, but was still sent to one of the app kiosks at PVG to redo it. That was only a 2-minute diversion in the grand scheme.