What is the longest time for a tourist visa in China? Some people live directly for three months, and some people say that the stay period is one month and must be extended. Which one is right?

The crux of your question is the number of days allowed to stay in the country. As long as your single stay time does not exceed the single stay time marked on the visa.

The longest tourist visa is a visa that is valid for multiple times in one year and allows for six months at a time, that is, one-time allowed stay 180 days. But the application is more difficult. As long as the stay period is not exceeded, that is to say, a single stay does not exceed 180 days, there is no need to leave the country. After obtaining multiple visas, you can stay again 180 days. If it takes more than 180 days, you can apply for a Z-shaped work visa first, and then you can apply to the domestic public security organs for a long-term residence visa. This visa is not limited to a single stay, and it is printed in blue, as long as you leave the country before the validity period of the visa expires.