Yilong sent me a message saying that he had booked a room in Shanghai. What happened?

1. Someone left a phone number to book a hotel, which is similar to your number. He left it by mistake.

2. Someone played a prank and made a random phone call to book a hotel in E Long, but he didn't go to stay, which led to NOSHOW in E Long, and this random phone call happened to be yours. ...

3. Someone stole your mobile phone number, probably your former owner, registered something or left your number.

4. Other E Long made a mistake (which should be unlikely).

Ha ha. I suggest you call them and ask them to save you some trouble.