Just read your query from last year. Sorry for the delay in replying.
To answer one: I have seen quite a few wild asses in Mongolia.
BTW: Are you referring to the Qinhuangdao zoo specimens as having been DNA tested for a prospective studbook inclusion?
To my knowledge sadly very few zoos in P.R. of China are actually listed in the ISB for Asiatic wild ass. Interzoo communication with regards to Chinese zoos seems to need a little stimulus?!??