What are the consequences of Mexico's overdue withdrawal?

Generally speaking, you can't apply for a new visa until it expires. Without a legal visa, you can't leave the country even if you have a ticket.

And now the audit is very strict. During the epidemic, only special and important meetings, domestic citizens and foreigners with permanent residence cards can enter Mexico.

If it's really important, you can find the Mexican embassy in China and see if it can be solved.