The mystery shrouded in a riddle that is the state of exascale supercomputing in China is the main topic of this week’s @HPCpodcast episode. Setting off a re-focus on the recurring topic: the release of a research paper from PRC university scientists on the use of the Sunway TaihuLight system, the no. 4-ranked supercomputer on the Top500 list,  in “quantum many-body problems,” which are problems of extreme complexity and scale.