I am currently working on another article on the Chengdu J-20 and this one is quite a bit longer so it may take me around a month to complete. This one goes into more detail on both the design philosophy (starts with a bit of analysis on the Taiwan Strait crisis) and quotes many of the "technically oriented" big shrimps on Chinese military forums on aerodynamic design.
You can follow the action at this link if you are interested. Starts on post #117. It is really unpolished right now so I don't recommend anyone posting them on another forum yet:
Official translation team thread - Page 12