Sure, but at the same time there is a real bias towards established methods and research groups. It's hard to find traction as a newly established group doing o

Sure, but at the same time there is a real bias towards established methods and research groups. It's hard to find traction as a newly established group doing original research - and "impact factors" are highly overrated since what ends up happening is the paper with most publicity and flash surrounding it is deemed more impactful. The fact that they went from almost zero representation at the international venues to such a high number should be indication that they are on the rise. In addition, I think the sheer number of students and resources at their disposal will ensure China have a continuous pool of talent to draw from. The US has become increasingly hostile and competitive for ML researchers in terms of academic pressure, and returning to China has been incentivized for a while now.