How long does it take to review the health code for returning to China?

Legal analysis: At present, the validity period of China citizens applying for health codes abroad is generally 48 hours after sampling, but it is accurate to days, not hours. Note that it is the sampling time, not the result time (many people make a mistake). Generally speaking, it takes half an hour to 2 hours to apply for a health code. However, the time given by the embassy or consulate is 12 hour, so there should be enough margin.

Legal basis: Article 3 of the Law of People's Republic of China (PRC) on Exit and Entry Administration The state protects the lawful rights and interests of citizens of China to leave and enter the country. The lawful rights and interests of foreigners in China are protected by law. Foreigners in China shall abide by the laws of China, and shall not endanger China's national security, harm public interests or disturb public order. Eleventh China citizens leaving or entering the country shall submit their passports, other travel documents and other exit and entry documents to the entry-exit frontier inspection authorities, and shall go through the prescribed procedures before leaving or entering the country.