Newspaper Kommersant cites the statement of the head of Rostec Sergey Chemezov:
The long negotiations on the delivery of the Su-35 to China have been completed, we have signed a contract.
In this case, the People’s Republic of China becomes the first foreign country to which Russian Su-35 aircraft will be delivered.
In all likelihood, the details of the deal were discussed during a visit to Moscow by the deputy chairman of the Central Military Council of the PRC, Colonel-General Xu Tsilyan. The Ministry of Defense of the Russian Federation noted that issues of countering terrorism and aspects of military-technical cooperation were discussed with the Chinese delegation.
It should be noted that the preliminary agreement for the supply of Su-35 to China was signed in 2012 year. All this time, the parties have been negotiating a contracting formula. Apparently, the formula was found, and Su-35 will soon begin to be delivered to Celestial.