President Xi Jinping (L) arrives at Vnukovo-2 airport in Moscow, Russia, to join the celebrations of the 70th Anniversary of Victory in the Great Patriotic War of 1941-1945, May 8, 2015. [Photo/Agencies]

With China remaining Russia's largest trade partner for the fifth consecutive year in 2014 and Russia being China's ninth-largest trade partner, economic cooperation will be another important topic for discussion.

Xi's visit is expected to see the two countries sign a number of cooperative documents in areas including energy, aerospace, taxation, finance and investment.

"The two leaders will expound their propositions on maintaining the outcomes of WWII, promoting world peace and stability, abiding by the purposes and principles of the UN Charter and international order with the UN at the core, so as to build a new type of international relations featuring win-win cooperation," said China's Vice Foreign Minister Cheng Guoping at an earlier time.

China's guards of honor, consisting of 112 members, who are scheduled to take part in the Victory Day parade in Russia, have taken part in rehearsals for the parade after arriving in Moscow. It is the first time for China's soldiers participating in Moscow's Victory Day celebration.

Xi landed in Moscow after visiting Kazakhstan. After Russia, Xi will make a two-day visit to Belarus, the first by a Chinese president in 14 years.