Very little chinese business here, you said. You are no better than poor propagandists.
Discussion
China is capable of investing more, but for a number of reasons it does not do so. What you have seen in the Russian Far East is only a small part of Chinese capabilities. Go to China itself and compare.
So of course what is now "little Chinese business" and certainly no "invasion". The usual cross-border partnership.
This in no way contradicts my words that they take only what is needed. And they take it peacefully. Far East, Siberia, whatever. Very unlikely for them it is small investments, but for Russia it's not small at all. I don’t understand what their entire capabilities have to do with it. I think they also buy everything they are given in the America/Europe/Asia/Africa/Australia/etc despite the opposition.