If you want to join a company, you must first confirm with HR whether it is necessary to sign a non-competition agreement. If you need to sign, you should study the agreement document with HR. If you don't understand it, spend some money to find a lawyer to help you interpret it. If HR can't provide the agreement documents, then you should be careful, and you'd better avoid it, otherwise it will be a little late when you resign from your original unit and find out what's wrong. If you can join a company without competition agreement restrictions, it is best not to join a company with competition agreement restrictions. There is no need to carry an explosive bag for yourself, and no one can guarantee that you will never leave your job.