Do I have to leave after 30 days of applying for resignation?

It is legal to leave after one month's resignation. According to the provisions of Article 31 of the Labor Law, a laborer shall notify the employing unit in writing 30 days in advance when dissolving the labor contract.

Article 32 Under any of the following circumstances, the employee may notify the employer to terminate the labor contract at any time:

(1) is in the probation period;

(2) The employing unit forces labor by means of violence, threat or illegal restriction of personal freedom;

(three) the employer fails to pay labor remuneration or provide working conditions in accordance with the labor contract.

Therefore, if you are a regular employee, you need to inform the employer one month in advance. If you are on probation, you need to inform the employer three days in advance.