Information such as academic qualifications will generally be queried on the system of the Ministry of Education when the unit is hired. Other information is forged. On the one hand, sharp interviewers may find out during the interview. Even if you don't get caught, your colleagues will know about the fraud in the future, and you won't be able to work with everyone.
Serious fraud, even if a contract is signed, if, according to Article 26 of the Labor Contract Law, the other party enters into or changes the labor contract against the true meaning by means of fraud, coercion or taking advantage of the danger of others, the labor contract is invalid or partially invalid.