Nanjing Yinghuada left the company for one month on probation?

You don't have to be a month in advance.

Employees in the probation period of Inventec need to submit their resignation applications to the unit three days in advance, and regular employees need to submit their applications to the unit 30 days in advance, and the leaders can approve them.

According to the Labor Contract Law, if a worker resigns during the probation period, he shall notify the employer in writing three days in advance and go through the resignation formalities three days later.