Russian President Vladimir Putin and Chinese President Xi Jinping (R) lay flowers at the Unknown Soldier Tomb on the Victory Day in central Moscow, Russia, May 9, 2015. Russia marks the 70th anniversary of the end of World War Two in Europe on Saturday with a military parade. [Photo/Agencies]

Amid Russia's national anthem and rumble gun salutes, the grand parade started. About 15,000 servicemen, marched into Red Square proudly in many formations.

In the historical part, Russian soldiers of three services wearing the uniforms which servicemen wore in 1940's and holding military flags of the patriotic war, goose-stepped into the Red Square, as a reminiscence of the war time experience.

In the modern part of the parade, Russia's military regiments of three services as well as the military equipment formations passed by the reviewing stand, as jets roared overhead.

China's guards of honor, consisting of 102 members, joined the parade and marched through the Red Square.It was the first time for Chinese soldiers to participate in Russian Victory Day parades. Xi waved to them.

Xi then walked with other leaders to the nearby Tomb of the Unknown Soldier to lay red flowers in salute to the soldier who sacrificed lives in the WWII.

May 9 is the Victory Day of Russia's Great Patriotic War. The Soviet Union made great contribution in the fight against the German Fascist forces in the European theater, which cost the Soviet Union 27 million lives.