BEIJING, Dec. 18 (Xinhua) -- More than 3.4 million Chinese have signed up for the 2020 national exam for postgraduate enrolment scheduled from Dec. 21 to 23, the Ministry of Education said.

The ministry has invited public oversight and tip-offs of exam-related wrongdoings including organized cheating and the peddling of so-called answers.

In accordance with the latest interpretation of applicable legal provisions, those acts will lead to criminal penalties, according to a statement by the ministry.

A total of 2.9 million Chinese students took the entrance exam for postgraduate studies last year, the highest number in the past 40 years, statistics from the ministry showed.