Robbery is a criminal case, usually based on the place where the case occurred.
There is no need to sue an individual, because the other party, as an employer, can sue the employer company that signed the contract.
If it is defined as robbery and the prosecution period is very long, you can report it to the local public security organ in Inner Mongolia. If the police decide that it is only a contract dispute, not a robbery, they need to go to court for civil proceedings.
In addition, Moonstone reminds you that there is only a two-year prosecution period in civil litigation. If it is identified as robbery, it doesn't matter, until the criminal case is completed. If it is an ordinary civil case that has occurred for more than 2 years, and you have failed to prove that you are looking for it to recover losses, the court may not accept it.