These are exciting times for fast lens aficionados, these Chinese lens makers are following the footsteps of the Japanese in the 1950s when optical firms like Canon and Nikkor and Fuji and Zunow were cutting edge and breaking the speed barrier.
It is hard to know much about the photo qualities of a lens from a schematic, as there are so many variables to an actual physical lens in real world use and too many opinions, all valid and all different.