HONG KONG — U.S. President Joe Biden and Chinese leader Xi Jinping will speak by phone “in the coming weeks,” the White House said Wednesday, as part of an effort to improve relations between the two superpowers.

The announcement came as national security adviser Jake Sullivan wrapped up two days of talks in Beijing with Chinese Foreign Minister Wang Yi.

The White House said the two sides had held “candid, substantive and constructive” talks on a range of bilateral, regional and…