I can tell you that this is a lie. Don't go. Domain name docking mainly depends on the traffic of your registered domain name. Registering a domain name itself costs a lot of money, and it is difficult for you to register a domain name with traffic. If this educational institution can register its own domain name with traffic and dock its own domain name, there is no need to open a training class. So it's fake. I hope I can help the landlord. Thank you.