From the Hyobi blog.
Go to Rewards Hub to win up to 5,672 USDT rewards!
It takes only a few taps to buy BTC or stablecoins on Huobi App.
Open Huobi App, log in to your account and click “Buy Crypto” in the middle part of the homepage
Select a fiat currency, such as USD, to make the payment.
Enter the amount to buy, such as 100 USD. Then tap Buy USDT.
Select your desirable payment service provider (e.g. Mercuryo) and tap Buy USDT.
Once the payment is made via a third-party service provider, you own some USDT assets now.
You may check the USDT you bought on your Assets page.
Enjoy your trading journey on Huobi!
This article came directly from the Hyobi Global blog, found on https://blog.huobi.com/how-to-buy-btc-or-stablecoins/