As a sign of warm personal ties between the two countries, President Vladimir Putin has treated his Chinese counterpart to Russian pancakes.
As reported by AP, the two leaders ate pancakes with caviar and had shots of vodka at an exhibition of an economic forum in the far eastern port of Vladivostok.
Beijing and Moscow have developed a "strategic partnership" reflecting their shared opposition to the "unipolar" world, the term they use to describe perceived US global domination.
The rapprochement has been driven by a strong personal relationship between Putin and Xi, seen as the most powerful Chinese leader since Mao Zedong. The two have met nearly 30 times, and Putin said that the Chinese president is the only world leader whom he once invited to celebrate his birthday.
From China's perspective, the emerging military alliance with Russia sends a strong signal to the US and its ally Japan as Beijing moves to defend its interests in the South China Sea, which China claims virtually in its entirety.
Meanwhile, for Russia, the increasingly robust alliance with China is particularly important amid the growing tensions with the US and its allies and a looming threat of more biting US sanctions.