China doesn't really need anyone to help them learn to fly on or off an aircraft carrier, nations often use land based replicas of the flight deck to train on.

The first aircraft carrier China got their hands on was the HMAS Melbourne which WE SOLD THEM as scrap in 1985 for 1.4 million, and they studied it and made a replica of the flight deck to train pilots on.

Also the Liaoning has been combat ready since 2016.

While China has 2 "ski-jump" carriers (Liaoning and Shandong) China has launched, but not yet flown aircraft off, its latest carrier, Fujian.

Fujian just happens to be China's first CATAPULT carrier. The experience of defector-contractors, like ex-US Marine pilot Duggan, is/was invaluable to China. Duggan was involved in training Chinese pilots to anticipate the cross-winds and "drops off the bow" experienced by Chinese pilots when Fujian is fully operating.

http://en.wikipedia.org/wiki/Chinese_aircraft_carrier_Fujian

It was always about educating the ignorant Chinese.
Turns out the Ignorance was a misunderstanding of the Chinese character.

http://visualizingcultures.mit.edu/civilization_and_barbarism/cb_essay03.html

Carriers are not that easy to fly off. We killed 7 carrier experienced pilots while working up Melbourne, & that was without anyone shooting at us.

The moral to the story is never get trapped in the American geopolitical web, they have their own judge Freisler, waiting and willing to pass sentence on you.

I'm simply wondering why someone as privileged as a fighter Pilot would teach the people he was trained to oppose, offer to train them with the tactics required ?
Are people now really so selfish ?