China's special envoy for Eurasian affairs, Li Hui, said on Friday that the Russian side appreciated China's desire and efforts to resolve the Ukraine crisis.

"The risk of escalation of the Russia-Ukraine war is still high," Li said at a news briefing on his European tour last month.

"All sides must ensure the safety of nuclear facilities and take concrete measures to cool down the temperature," he said. (Reporting by Laurie Chen, Liz Lee and Ethan Wang; Editing by Christina Fincher)