Putin and Xi last met in Beijing in February, weeks before the Kremlin sent troops into Ukraine. The two presidents oversaw the signing of an agreement pledging that relations between the sides would have "no limits". It remains unclear whether Xi knew at the time of Russia's plan to launch what Moscow is calling "a special military operation" in Ukraine.
While offering its tacit support for Russia's campaign in Ukraine, China has sought to appear neutral and avoid possible repercussions from supporting the Russian economy amid international sanctions.
Moscow and Beijing have increasingly aligned their foreign policies to oppose liberal democratic forces in Asia, Europe and beyond, making a stand for authoritarian rule with tight borders and little regard for free speech, minority rights or opposition politics.
The Russian military held sweeping military drills that began last week and ended today in the country's east that involved forces from China, another show of increasingly close ties between Moscow and Beijing amid tensions with the West over the military action in Ukraine.
Even though Moscow and Beijing in the past rejected the possibility of forging a military alliance, Putin has said that such a prospect can't be ruled out. He also has noted that Russia has been sharing highly sensitive military technologies with China that helped significantly bolster its defence capability.