SAN FRANCISCO (Reuters) -U.S. Treasury Secretary Janet Yellen and Chinese Vice Premier He Lifeng agreed to "intensify communication" and work together on a range of economic, financial stability and regulatory issues, Treasury said on Friday. The two "had candid, direct, and productive discussions on the U.S.-China bilateral economic relationship and a wide range of issues, including areas of cooperation and areas of disagreement," Treasury said in a statement. The two met Nov. 9-10 in San Francisco ahead of the summit of Asia-Pacific Economic Cooperation (APEC) country leaders.