American visa expired, can I go back to China?

You can go back to China. But you can't go to Turkey after the visa expires.

If the visa expires in a few days (different countries have different tolerance), you can apply for a new passport or pass at the China Embassy (about 1-2 weeks). With these documents, you can go home.

After the probation period, it is best to hand it over to our embassy and foreign management agencies before going abroad to try to gain some understanding. After returning to China, you need to apply for a new passport from the Immigration Bureau, and then apply for a new visa with the old and new passports.

Extended data:

Notes on the validity period of the visa:

The number of entry visas can be any number, at least once and at most "m" times (representing unlimited or multiple times), but the purpose of each entry must be the same. If you need to travel to the United States frequently and hold multiple entry tourist visas, you don't need to apply for a new tourist visa before going to the United States every time.

However, it should be noted that although you hold a multiple-entry tourist visa, you cannot use it to work or study in the United States after entering the country.

The validity of the visa means that during this period, you can show your visa to the American immigration inspector at the American entry port and ask to enter the United States.

Holding a visa does not guarantee that you will be allowed to enter the United States. You shouldn't confuse the validity of your visa with your stay in the United States. The duration of the visa owner's stay in the United States is determined by the immigration inspector at the entry port of the United States and shown in your entry and exit records. The validity of the visa has nothing to do with the time of stay in the United States approved at the time of entry.

Baidu Encyclopedia-American Visa