1) PLAAF operates Su-30MKK while PLAN operates Su-30MK2. PLAN was responsible for the intercept.
2) It was an intercept. As in they got wvr and evicted the intruding aircraft.
3) There is no info on whether the intercept happened in ADIZ or Chinese Airspace.
No one violated Chinese airspace, they were likely there to probe the ADIZ, this could happen every-day and night for a year, and probably should, unless its your day off, now China will also no doubt "infringe" upon others ADIZ as well, its all good as long as no one gets stupid. I wouldn't sweat it, this is part of everyone coming up to speed, in reality, no one is ready to tango, that is when the game stops and it will get ugly, for everyones sake, I hope people don't get stupid! But make NO MISTAKE, this is 14 year olds playing with the Hornets nest with a stick, and somebody will get stung, why I recall the time I was throwing corn cobs at a red wasp nest right over my head, red wasp fell off the nest right onto my forehead and whopped me good, advantage Tennessee Red Wasp....changed up from corn cobs to a coffee can full of gasoline,,,,,,,,, fire power upgrade, advantage brat...
The Flanker is the logical bird for over water intercepts as is the F-15. and although the Flanker may be a little more agile, the F-15 is where I will put my Franklin, but then I am biased, but at lieast I'm honest about it. brat