Xi sends congratulatory letter on completion, operation of Qinling Station in AntarcticaHong Kong holds digital economy summit, eyes sustainable futureXi extends Spring Festival greetings to all ChineseXi Holds Talks with Sierra Leonean PresidentHong Kong holds digital economy summit, eyes sustainable futureXi congratulates Nangolo Mbumba on assuming Namibia's presidencyMore U.S., China financial cooperation expected by industry insidersXi, Portuguese president exchange congratulations on 45th anniversary of bilateral tiesFourth Volume of 'Xi Jinping: The Governance of China' Published in EthnicChina's thriving tech innovation a boon for emerging business forms