U.S. Treasury Secretary Janet Yellen said on Friday that she agreed with Chinese Vice Premier He Lifeng to "intensify communication" on economic issues but warned him to crack down on Chinese companies that give material support to Russia for its war in Ukraine.

The two "had candid, direct, and productive discussions" on issues from U.S export controls to possible areas of cooperation, including climate change and debt relief for low-income countries, Yellen told a news conference after two days of meetings in San Francisco.

The two held talks before the Nov. 15-17 Asia-Pacific Economic Cooperation (APEC) gathering of leaders in San Francisco, which will feature a planned meeting between U.S. President Joe Biden and Chinese leader Xi Jinping.