If this site is part of Huobi Cloud partnership, we can easily check using Huobi Official Media Authenticator that available on Huobi website.

https://www.hbg.com/en-us/verification/
https://www.huobi.so/en-us/verification/


Huobi Cloud Official Partner example:
Huobi Indonesia : https://www.huobi.com.co/
SaBi : https://www.sabiii.com/