"China is too smart for that - all it really wants is the...

"China is too smart for that - all it really wants is the resource rich parts of siberia directly bordering the northern areas of china, an area Russia really can't defend. Hence the 30 million chinese relocating to the area in the last 5 years."

That part of Russian Siberia used to belong to China. I don't think China has conceded its historical claim to that part of Siberia. It is also a reason the Russians are suspicious of the Chinese.