I'm a long-distance escort in Lanzhou, and I haven't been out yet. I wonder if it's a lie.

It should be fake. You can't wait for further notice. Deceptions like this are common in society. If the escort work needs people, the institutions that need it must train inspectors first, and it will require a lot of recruitment procedures. The escort certificate does not mean that you can do it casually. But when you see that she collects money first and then asks you to do something, you know it's fake. It has no right to accept any formalities at all, even if it does, it will be deducted from your future salary. I think it is necessary for you to use local legal aid, and of course it is necessary to collect evidence! Good luck.