Not a single Russian involved and only Chinese. The damage Russian kuznetsov even contemplate asking Chinese to help them restore their carrier...
https://www.rferl.org/amp/29593113.html
Chinese naval engineers have had many opportunities to study aircraft carrier design—including decommissioned foreign aircraft carriers that Chinese entities acquired as well as the information gleaned from various exchanges. In one such exchange in 1995, Spain’s Empresa Nacional Bazan, which built the light aircraft carrier Chakri Naruebet for Thailand, offered China plans for a similar ship. Chinese officials also inspected and received bids for other retired aircraft carriers, such as France’s Clemenceau in 1996 and Argentina’s Vienticinco De Mayo in 1997.
Despite its refit, most of the Liaoning’s major systems are still the same as those aboard its Russian sister ship, the Kuznetsov, which has been noted for its high number of maintenance problems and low number of days at sea.
Given that the Liaoning is a medium-sized aircraft carrier, it will likely embark few more than 20 fighters. Certainly it could provide air cover for a naval force at sea. But, if built without catapults, its fighters would be unable to carry the heavier combat loads necessary for long-range strike missions.
And since Beijing’s principal concern has traditionally been Indian Nation, which lies about 200 km offshore, the Liaoning’s fighter complement would not meaningfully add to the hundreds of Su-27 and J-10 fighters based across the Strait.
But in 2005, reports emerged that outlined China’s interest in procuring as many as 48 Su-33 fighters and carrier training for 50 pilots.
Then in 2010 Chinese newspapers began to report on the development of a naval variant of the land-based J-11
fighter, China’s version of the Russian Su-27 fighter. The following April, China unveiled that naval variant as its J-
15 fighter, which possibly has features integrated from A Russian Su-33 prototype that China acquired.
Rumors indicate that China tried to purchase the wires from Russia, but was rebuffed as a result of Russian
irritation over Chinese reverse engineering of the Su-33 to create the J-15 naval fighter. Still other rumors assert that China have since been able to acquire arrestor wires from Russia.
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As reported in the March 2018 issue of the Chinese aviation magazine
有關 航空 的 緋聞 和 閒話 ("Aviation News") published in Shanghai
, Russia and China have been negotiating for some time about temporary training "internships" for pilots of Russian naval aviation at the first the Chinese aircraft carrier
"Liaoning" (Liaoning) . We are talking about the pilots of the 100th and 279th separate naval fighter aircraft regiments of the Northern Fleet aviation of the Russian Navy, whose flights from the deck became impossible due to the installation of the only Russian heavy aircraft carrier
"Admiral of the Fleet of the Soviet Union Kuznetsov"in the repair, the end date of which is difficult to foresee. In view of this, the Russian side appealed to the Ministry of Defense of the PRC with a request to conduct "training" tours of Russian ship pilots on the almost identical Chinese aircraft carrier Liaoning for the time of repair of
"Admiral Kuznetsov ".
Flights of Chinese J-15 fighter jets on the first Chinese aircraft carrier Liaoning, November 2016 (c) CGTN
The magazine reports that the Chinese side has responded positively to this request and now detailed negotiations are underway, for which a group of Russian military specialists arrived in China at the beginning of the year. The agreement will be concluded on a commercial basis with the participation of Rosoboronexport. Presumably, Russian pilots will arrive in China in groups of four or six pilots on their planes (Su-33 and MiG-29KR / CUBR) and make a number of take-offs and landings on them on the deck of "Liaoning". The article notes that for both sides this will also be a good way of getting familiarized with the procedures and peculiarities of the actions of ship aviation - even though the Chinese naval aviation "arose from the same nest." Although, as the Chinese magazine is sure, by now the "Chinese deck aviation has already surpassed the Russian one", nevertheless, he recalls that the Russian ship aviation at the "Admiral Kuznetsov" got real combat experience, participating in combat operations in Syria on a march in 2016, 2017 year. 
