If the visa expires abroad, will it be troublesome to go back to China for border inspection?

You cannot leave the country after the visa expires.

A visa is a document issued by a country to foreigners who enter the country and are allowed to stay in its territory. Passengers holding this visa can only enter the country after the validity period begins and must leave the country before the validity period ends. It is illegal to stay in a foreign country with an expired visa. Once it is found out, it will have serious consequences (such as being deported, blacklisted, affecting future entry permits, etc. ). So you should apply to the local government department for an extension before the visa expires. Because the renewal is based on the original visa, this procedure is generally very simple. As long as there are relevant materials, many countries can do it right away.

For the above reasons, once the visa expires, you can't buy a plane ticket to return home. And don't take any chances, because even if you buy a plane ticket, it is impossible to pass the border inspection and customs of the two countries. On the contrary, holding an invalid visa will bring a lot of trouble to the holder. In this case, you should immediately go to the local immigration office to explain the reasons for the expiration, and go through the formalities for changing the validity period of the visa in accordance with relevant regulations. Only with this valid visa can you leave the country smoothly.