Hi Tam your detailed input will be appreciatedThey cut off engine supplies for the J-11 to express their displeasure but their business for the AL-31FN for the J-10s continued.
Of course, the Chinese do good business with the Russians but which Russians? The Chinese always favor KnAAPO, who despite making Flankers, is a separate entity from Sukhoi. In fact KnAAPO and Sukhoi went to blows in court over the money for the Su-30MKK and -30MK2. China wasn't happy about the Su-27UBK being made in Irkutsk, which is where the Su-30MKI was made and is crawling with Indian technicians who can just look over at the same assembly hall at the Chinese planes. But Sukhoi made it that Irkutsk are the ones that make the two seaters while KnAAPO makes the single seaters, sort of their weird idea of fairness. China insisted that the Su-30MKK must be made in KnAAPO and not in Irkutsk, which was Sukhoi's original intention. Irkutsk had even came up with their own proposal for the Su-30MKK. Su-35 is made in KnAAPO, which itself is north of the Chinese border. Its only a short trip for the planes to fly down the border to China, and also convenient for them to fly back for repairs and maintenance.
Thank you