Hello BiancaHO16, unfortunately I can't give you any precise information on this. Samsung phones on this monitor work without any problems because SamsungDex regulates the data exchange. But I did a quick google and found this:
https://smartandroid.fr/en...
According to this page, you only need an MHL adapter (Mobile High Definition Link). This should work:
Verbatim USB Type-C to (HDMI, 5.50cm)
Then connect the whole thing to the HDMI cable supplied with the screen and power the monitor. Disadvantage: You can't charge your Xiaomi at the same time, at least not by cable, but maybe by induction charging (wireless charging).