TC, I think you got close enough to it. In my source it is called Xuzhou (or Shuzhou) which is a town a bit west of Shanghai. And the manufacturer of several aircraft called Xuzhou Air Station may well be the NAVAL AIR ESTABLISHMENT that your Chiang Gae'n two-seat reconnaissance biplane or advanced military trainer comes from.
So, if others do not mind, I'll grant this one to you.