Russia wants to supply more gas to China amid strained relations with the West.
Head of state Vladimir Putin announced a new supply contract for ten billion cubic meters per year during talks with head of state and party leader Xi Jinping in Beijing on Friday.
"A step forward has been made in the gas sector," Putin said, according to the Interfax agency.
In addition, solutions were developed for the delivery of hydrocarbons.
According to its own statements, China bought more gas in Russia last year than in 2020. The People's Republic imports so much energy and raw materials from no other country.
Moscow is currently still waiting for approval for the Nord Stream 2 gas pipeline to Germany.
The federal government has questioned leadership in the event of a military escalation in the Ukraine conflict.
Putin attends the opening ceremony of the Winter Olympics in Beijing.
His plane landed on Friday afternoon, according to footage broadcast by state broadcaster CCTV.
It is the first personal meeting between the two heads of state since the outbreak of the corona pandemic in spring 2020. At the start of the visit, Putin once again called relations with China "unprecedented".
"As for our bilateral relations, they are developing really gradually, in the spirit of friendship and strategic partnership," Putin said.
"I've known President Xi Jinping for a long time," CCTV had previously quoted Putin as saying.
"As good friends and politicians who share many common views on how to solve world problems, we have always maintained close communication."
For its part, China had recently sided more clearly with Russia in the dispute between Russia and the NATO countries over Ukraine.
Last week, China's Foreign Minister Wang Yi called Russia's security concerns "legitimate" and said they should "be taken seriously and addressed."
Among other things, Putin is demanding a fundamental renunciation of any further eastward expansion of NATO.
The military alliance rejects this.