China's President Xi Jinping told his U.S. counterpart Joe Biden that the issues of Taiwan, democracy, human rights and rights to development are "red lines" for China and not to be challenged, the official state media Xinhua said on Sunday.

We are the most important alliance – or the most important relationship in the entire world, and how we’re getting along together can impact the rest of the world,” Biden said.

President Joe Biden is expected to use his final meeting with China's leader, Xi Jinping, to urge him to dissuade North Korea from further deepening its support for Russia's war on Ukraine. Saturday's talks on the sidelines of the annual Asia-Pacific Economic Cooperation summit in Peru come just over two months before Biden leaves office and makes way for Republican President-elect Donald Trump.