Legal analysis: The relevant provisions of the training agreement are stipulated in the labor contract signed between the employer and the employee, and the employer has provided the employee with professional technical training, paid the training fee and provided the invoice for the training period. If the employee resigns, the employer may require the employee to pay the liquidated damages. According to the laws of our country, employee training, as an important part of the labor rights and obligations, should be stipulated in the labor contract, and the relevant training items and liabilities for breach of contract should be clearly defined, or enterprises and employees can also sign special training contracts to make specific provisions on related issues (including liabilities for breach of contract) of a specific training project.

Legal basis: Article 22 of People's Republic of China (PRC) Labor Contract Law. Where an employer provides special training fees for laborers and provides them with professional and technical training, it may conclude an agreement with the laborers to stipulate the service period. If the laborer violates the service period agreement, he shall pay liquidated damages to the employer in accordance with the agreement. 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. If the employer and the employee agree on the service period, it will not affect the employee's improvement of labor remuneration in accordance with the normal wage adjustment mechanism during the service period.