Satoshi Nakamoto is a Japanese name, not Chinese.
China has influence over bitcoin, potentially, via the possibility of regulating either mining or bitcoin exchanges. The impact of both would be limited since a strong negative action by the government in either area would lead to offshoring of either the mining or ownership of BTC. So there would be basically a one-time negative event, and then reduced exposure to Chinese influence thereafter.
So far as controlling the bitcoin protocol, I don't see any evidence that China is a significant player in that respect.