Yuekang code, that is, health code, can find out where you have been, because there is that activity track, so you can find out.
Yuekang code is a health password developed in Guangdong Province based on "Guangdong Province saves trouble" WeChat applet. People can get their own Guangdong code by logging in to the "Guangdong Easy" WeChat applet with their real names on their mobile phones. Old people, children and other groups that are inconvenient to use mobile phones can be collected by their families. Yuekang code has been promoted in many cities in the province to help people walk one yard in Guangdong.