[revax]

According to the name of the icon, it's the flag of the Soviet Union, not China.

Edit: I would guess it's labelled Soviet when it's unclear which side the equipment come from.

[enkid]

Russia and Ukraine still use a lot of equipment that was built when the USSR was a single entity.

[prima-facie]

Those are definitely soviet from the naming scheme. The Chinese use a completely different naming scheme

https://man.fas.org/dod-101/sys/land/row/index.html

[userbinator]

They are indeed quite similar from a distance:

https://en.wikipedia.org/wiki/Flag_of_the_Soviet_Union

https://en.wikipedia.org/wiki/Flag_of_china