What does the health code white star mean?

This means that this person has received two shots of COVID-19 vaccine. Played a protective role. So when he was healthy, he immediately took the star.

The white health code is a network problem. It is recommended to refresh several times to recover. Health code demonstration is a demonstration that can display local health codes at will according to individual needs, switch the color of health codes, and customize the display area, city and name.

The asterisk before the health code name may be because the first word in the name is not a common word, while the asterisk in the travel code indicates that you have been to the middle and high risk area in the previous 14 days.