The Shenyang municipal government and China Eastern Airlines signed a letter of intent at the conference, agreeing to open a regular passenger air route between Shenyang and Moscow in late February.
In his congratulatory letter, Xi extended warm congratulations on the convening of the meeting. He said that at present, changes unseen in a century are unfolding at an ever faster pace and the world has entered a new period of disorder and transformation.
Russian President Vladimir Putin spoke highly of the Belt and Road Initiative and praised President Xi Jinping's "strategic judgment" of the world situation, in his latest meeting with senior Chinese diplomat Wang Yi.
China supports Russia in maintaining national stability and achieving development and prosperity, said a Chinese foreign ministry spokesperson on Sunday.
China's top diplomat to the European Union said that Beijing will respond strongly to any EU sanctions on Chinese entities for alleged circumvention of EU sanctions on Russia without providing any solid evidence.