I doubt that would happen since China has no experience with long-duration space flight, doesn't yet have a launch vehicle big enough and lacks the long-rance communications infrastructure necessary for such an expedition <b>but</b> if it were to develop that China was on the verge of making the voyage I suspect that the US and Russia would push quite heavily to make it an International mission. Ironically, I suspect that if China was to invite anybody to join the mission, it would most likely be the Europeans.