To my point, the United States basically threw in the towel in 1970 despite the director of ORNL calling it the facilities greatest technical achievement. The only reason uranium won out over thorium was because the waste was weapons grade and useful during the cold war. Unlike the US, China has very little in the way of domestic uranium supplies - but incidentally has massive thorium stockpiles from its monazite mining.

I think it is naive to assume that an operation with effectively limitless funding led by the former director of CERN has only managed to clone a 50 year old research project without any advancements. Maybe a better perspective is that that given the strategic value they just aren't sharing the details with the rest of the world.