According to your description, I will make the following analysis for you from the legal point of view: whether the contract is valid or not needs to be judged according to the specific content of the contract, and it is difficult for us to judge according to your description. If your contract is reached by both parties through consultation, and there are no violations of laws, ethics and other matters in the content, and there are no defects, then the contract is valid. If you have concerns about the contract, you can entrust the performance offline audit. Finally, you can refer to People's Republic of China (PRC) Contract Law to understand the relevant legal provisions involved in this solution.