2, through the email address of the phone they left, it can be determined that it was not sent by Tsinghua;
3. It is estimated that this was opened by people who are inextricably linked with Tsinghua (such as leading relatives or people who dare to play the ball) and rented a place in Tsinghua compound.
You can't say it's useless. People who spend money generally should be able to do something.