I think we will have to wait another hundred years. But neighbors are doomed to friendship. China needs our space technologies, and they can get them only in joint projects.
Well, the Chinese are the only large neighbor who did not attack Russia (small skirmishes do not count).
Never say never. But still Russia is a small fry for China. Moreover, I believe that even our lands in the Far East are not needed by the Chinese for nothing. China is an economic monster. With a culture and philosophy different from us. But we would be smarter looking for allies in the West. All the same, closer culturally. And the Chinese do not like to fight. They are merchants, not fighters.