Russia is fire-saleing everything. China can put operations in various places but their government structure is such that they can’t control them as they like. They can’t even deal with citizens out of the country. The person who sits next to me is from China. She is no more communist than any of us and she has no interest in returning or obeying any edicts like how many children she can have.
Chinese are big on assimilation, not domination. They want to go to the US and make a huge pile of money. They won’t kill the goose that lays the golden egg. Their military is focused west, not east.
Yet they are looking to expand their markets and influence. An apt comparison may be the early British Empire.
Russia is searching for the lost glory of the Third Rome. They have a long history of retrenchment followed by expansion. They didn't get to be the largest land empire for nothing