you can invest it here https://www.gate.io/hodl/18... @gateio

Investing USDTEST in Gate.io is a simple process. First, you will need to create an account with Gate.io and deposit some funds into your account. Once the funds are deposited, you can go to the HODL page and select the USDTEST option. You will then be able to select the amount of USDTEST you would like to invest and the duration of the investment. After completing the transaction, your USDTEST will be stored in a secure wallet and you will start earning profits based on the amount you invested. It is important to note that USDTEST is non-tradeable and non-withdrawable, so you will need to keep your investment until the duration of the investment has been reached in order to receive the profits.

How to invest it here?