The measures that are making the news now didn't really reach their peak until Xi was in power. Also, the Chinese are known to flood with ethnic Han people recalcitrant territories they conquered.
All this has been used by the Soviet Union before and I'm sure we can find a guide book on suppressing satellite states in some KGB archive or perhaps in Germany (copy lent to their friends in stasi). It sounds to me that the Chinese are using this here.
