Lithics terminology is always confusing. Levallois encompasses a huge variety of different traditions. The headlining article here is talking an Initial Upper

Lithics terminology is always confusing. Levallois encompasses a huge variety of different traditions. The headlining article here is talking an Initial Upper Paleolithic (IUP) tradition. It's one of those technical terms that everyone uses a little differently, but usually means something along the lines of "uses middle paleolithic techniques (like levallois) to make upper paleolithic designs". They're associated with the entrance of anatomically modern humans into Eurasia (caveats apply). This site is notable because it's the oldest such site in China. We already know of older sites from the same broad pan-Gobi region (e.g. Tsagaan Agui), they're just not in China.