Chinese President Xi Jinping called for an immediate end to hostilities in the Middle East and stressed the importance of negotiations during talks with Russian President Vladimir Putin.
The leaders met on Wednesday as part of the Russian leader's state visit to Beijing.
"The cessation of the war would help reduce disruption to stability of energy supply and the international trade order," Mr Xi said. "It is imperative to stop the fighting."
Mr Putin's trip to China comes after high-profile visits by US President Donald Trump last week and Iranian Foreign Minister Abbas Araghchi earlier this month. The US and Iran have been at a stalemate in negotiations to end tensions over the Strait of Hormuz and turn a fragile truce between the nations into a more durable and comprehensive settlement.
China gave Mr Putin a similar welcome to the one received by Mr Trump days earlier. A 21-gun salute rang out as a military band played the national anthems of the two countries, while dozens of children holding Russian and Chinese flags greeted the leaders.
In opening remarks before talks in Beijing, Mr Putin told Mr Xi that Russian-Chinese relations were at an unprecedented high level and called them a model of partnership.
Describing Mr Xi as a “dear friend", Mr Putin said Russia remained a reliable supplier of energy to China. “In the current tense situation on the international stage, our close co-operation is especially needed,” he added.
Energy supply pressures linked to the Iran conflict could strengthen Russia's case for the Power of Siberia 2 gas pipeline to northern China as a long-term supply route, although Beijing is likely to continue prioritising its energy import diversification strategy.
About 40 documents are expected to be signed and a 47-page joint statement on strengthening the partnership between the countries will be issued, the Kremlin said. Mr Xi said bilateral ties have developed because both sides increased political trust and strategic co-ordination.
