It's worth considering the possibility that a language barrier was part (if not most) of the problem. I regularly operate through PVG and SHA, and English is only used in comms with LESS THAN HALF of the aircraft on frequency.
The Qatari flight would have been using English and ATC would have been responding in English. The Juneyao crew would have been using Mandarin with ATC responding in Mandarin.
The loss of situational awareness that this causes is unnerving, even while ops are normal. We are forced to rely heavily on TCAS as primary means for situational awareness in terminal airspace. Awareness of comms from/to most other aircraft in the vicinity is lost.
In a fuel (or other) emergency, the possibility of a "lost in translation" causing at least confusion and at worst fatalities is a very real threat.
...but all Chinese pilots speak English to level 6, right ICAO?
Grrr...