Question Miui12 would install apps without my consent if I change Region in the Setting randomly?

[amecam]

My device is Redmi note 11 pro bought in China. But the device was flashed with a global Miui 12 in English because I wish to have the Google framework. But I happen to find that Miui12 would install some game and other various apps on my device without any notice if I change the Region in the Setting, e.g. swith from US to Hongkong, to Thailand. Later I downloaded and installed the update patch from Xiaomi and had a full factory reset on the system. But the problem still exists.

Am I the only one who encountered this problem?

 

[amecam]

This screenshot was taken after I had the factory reset. Those apps in the red box were installed by the Miui12 system quietly.