There were possibly Russian advisors on board the Liaoning. Same with other major PLA-N ships on exercises/training. PLA-N did not have the expertise or experience in the past. However, the Chinese are known to be fast learners.
Why? Just because they did not have the expertise or experience in the past? Plus do you have any evidence or links to the expertise or lack of of the Chinese?
Does the Russian had lots of aircraft carrier battle group experiences? And from all that we have seen, the Chinese aircraft carrier battle group seemed to follow more in the footsteps of the Americans rather than the Russian/ Soviet Union. In that case... shouldn't you be saying that there must have US advisors on board of the Liaoning?
Plus the PLAN had been operating major combatants for years by now... shouldn't they already have the basic understanding on how to work as a team in the water... the only biggie here is... there is an aircraft carrier in the group now.