I signed a contract with a cultural media company and now I regret it.

As long as you don't want to work, you can inform the employer one month in advance and write a resignation report, and you can go. The sooner you leave, the less he will spend on your training and packaging. If you really don't want to stay, the worst thing is to pay for his packaging. Of course, you don't have to pay for the general training, but it's the packaging cost you mentioned. I know this is a special fund. Since you want to collect it yourself, the company should not spend too much money on you.

Specific reference laws are as follows:

Article 37 A laborer may terminate the labor contract by giving a written notice to the employing unit 30 days in advance. The employee may terminate the labor contract by notifying the employer three days in advance during the probation period.

Article 22 Where an employing unit provides special training fees and professional technical training for laborers, 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.