How long will foreigners be detained after their visas expire?

How long will foreigners be detained after their visas expire? According to China's current regulations, foreign citizens staying in China for 10 days will not be punished, but they will be fined from 1 1 day, with a maximum of 5,000 yuan per day in 500 yuan. For details, please refer to the Law of People's Republic of China (PRC) on the Entry and Exit of Foreigners. And leave the country within the prescribed time limit. If you stay illegally for too long, you may be blacklisted in China. Visa is a kind of license issued by a government agency of a country according to its own laws to foreigners who apply for entry, exit or transit. According to the principles of international law, any sovereign country has the right to decide whether to allow foreigners to enter or leave the country, and to issue visas, refuse to issue visas or announce the cancellation of visas already issued according to its own laws. The visa is usually attached to the passport or other international travel documents held by the applicant. Under special circumstances, valid passports or other international travel documents can be written on a separate sheet. With the progress of science and technology, some countries began to issue electronic visas and biological visas, which greatly enhanced the anti-counterfeiting function of visas. Visa plays an important role in checking and controlling entry-exit personnel, protecting national security and preventing illegal immigrants and criminals. Passport is the holder's nationality and identity certificate, and visa is the permission certificate of a sovereign country to allow foreign citizens or their own citizens to enter, exit or transit. Visas are generally endorsed on passports, some are endorsed on other travel documents instead of passports, and some are issued separately. For example, immigration visas in the United States and Canada are A4 paper, and Singapore also issues separate paper visas to foreigners. Generally speaking, a visa must be used at the same time as a passport to be valid. Article 29 of the Law of People's Republic of China (PRC) on Exit and Entry Administration: If the stay period indicated in the visa of a foreigner does not exceed 180 days, the witness shall hold the visa and stay in China according to the stay period indicated in the visa. If it is necessary to extend the visa stay period, an application shall be submitted to the exit-entry administration department of the public security organ of the local people's government at or above the county level 7 days before the expiration of the visa stay period, and relevant materials on the reasons for the application shall be submitted as required. Upon examination, if the reasons for the extension are reasonable and sufficient, the stay period shall be extended; Those who have not extended their stay shall leave the country on schedule. The extension of the visa stay period shall not exceed the original stay period indicated in the visa. To sum up, China runs the country according to law, so it also has certain control and restriction ability to foreign-related personnel. Although it can't be completely disposed of, it will be punished if it violates the relevant laws and regulations of our country. According to the law, such people will be expelled and repatriated if the circumstances are serious.