The green code takes 14 days. The general health code is yellow code, which needs to be collected at home or isolated for 7 days, and it will be turned into green code after 7 days of continuous health declaration. If you have been to an epidemic area, you need to be strictly isolated and wait for the green code.
Green code is a kind of health code, a pass certificate, universal and mutually recognized in the whole country, and a two-dimensional code representing health. Besides green code, there are yellow code and red team, which stand for different meanings: green code means safer. The yellow code means that you have been to an unsafe area. Red team said people who had contact with confirmed, suspected and asymptomatic infected people.