It can be used. Xiaomi mobile phone is not only can use Xiaomi's own smart watch, smart bracelet, other brands of smart wearable devices can also be used, including Huawei watch watchgt2pro. When using, you can download and install Huawei Sports health app and Huawei Watch watchgt2pro on the Xiaomi mobile phone to use the matching connection, and the use experience will be better.
You said that Xiaomi mobile phone can connect to Huawei Gt2Pro, right? There should be no problem, download Huawei sports and health APP, turn on Bluetooth, click the APP to add the watch!