Supposedly the KGB had a talk with him when he visited Moscow in the 80s. And he put up that pro-Soviet anti-Reagan newspaper ad after. Numerous business dealings...
When Donald Trump Tried to Meet With a Russian Leader in the 1980s
Donald Trump's Many, Many, Many, Many Ties to Russia
The definitive Trump-Russia timeline of events
With China it's a bit different. He did indeed ask for Russia or China for help in the elections.
Yes, he did have a Bank of China loan and Ivanka's business dealings, but his actions were more random, as in one day he would support China, the next day he would support Taiwan.
His actions towards Russia have been more coherent, I just don't see the same type of behavior.