Why did Stalin like to move the Soviet nation when he was in power?

During the German invasion, many ethnic minorities in China were bullied by the Russians before, so they helped the Germans defeat the Russians. After the war, Stalin collectively punished them and exiled them to Central Asia and Siberia, such as Chechnya. For example, Khrushchev rehabilitated Stalin after his death, and then allowed the exiles to return home.

In addition, in order to develop Central Asia and Siberia, Stalin also carried out planned large-scale immigration, and some small ethnic groups were immigrated to other places as a whole.