Seek legal assistance: contact a local lawyer as soon as possible to learn about your rights and coping strategies. They can help you understand the local legal system and related procedures, and provide you with legal advice and assistance.
Gather evidence: Gather as much evidence as you can that will prove your innocence. This may include documents such as your pay slips, work contracts, work schedules from that company, and other evidence that proves you were unaware at the time. This evidence may be very important in future legal proceedings.
Contact the Chinese embassy or consulate: they can provide you with the necessary help and support and assist you in contacting local lawyers and police.
Stay cooperative: Try to stay cooperative and open during the legal process. Provide the police and prosecutors with all information that may help prove your innocence.
Psychological support: This situation may cause you a lot of psychological stress, so it is also very important to find psychological support. You can share your feelings with your family or friends or seek the help of a professional counselor.
Lastly, keep in mind that this is just some basic advice and is not a substitute for professional legal advice. It is always best to seek professional help when dealing with this situation.