First of all, according to Article 22 of the Labor Contract Law, if a worker violates the service period agreement, he shall pay liquidated damages to the employer as agreed. The amount of liquidated damages shall not exceed the training expenses provided by the employer. The liquidated damages that the employer requires the laborer to pay shall not exceed the training expenses that should be shared for the unfinished part of the service period. It depends on how your training agreement is written.

Secondly, if you resign, according to the provisions of Article 26 of the Regulations on the Implementation of the Labor Contract Law, the employer and the employee have agreed on the service period. If the employee terminates the labor contract in accordance with the provisions of Article 38 of the Labor Contract Law, it is not a violation of the service period, and the employer may not require the employee to pay liquidated damages. So if you want to resign, you can refer to Article 38 of the Labor Contract Law and Article 18 of the Regulations for the Implementation of the Labor Contract Law. For example, not signing labor contracts, not arranging labor hours according to state regulations, not paying labor remuneration in full and on time, not paying overtime pay for overtime work, and not establishing national legal social insurance for workers on time. As a reason for resigning, you may also get economic compensation and double salary compensation for not signing a labor contract.