How many health codes can a guardian apply for?

Only one health code can be applied for a mobile phone with the same number. Except for children and the elderly who don't have mobile phones at home, they can handle it for their families through the agency module, and the limit cannot exceed 10.

Based on real data, the "health code" can be generated by citizens or people who have returned to work through online self-declaration. After background review, it is a electronic certificate where individuals enter and exit locally, and it is common for the whole city to declare at one time.