by Becky Davis Agence France-Presse BEIJING, China (AFP) – A top Chinese envoy landed in North Korea on Friday in a trip hailed as a “big move” by US President Donald Trump, who has urged Beijing to pile pressure on its nuclear-armed ally. Diplomat Song Tao is visiting the North on behalf of President Xi Jinping to brief officials on the recent Chinese Communist Party congress and other “issues of mutual interest,” foreign ministry spokesman Geng Shuang said. […]