china's taiwan affairs office, zhang zhijun, and the head of taiwan's mainland affairs council, andrew hsia. chinese president xi jinping and taiwan's president ma ying-jeou agreed to open the hotline last month. both sides say the hotline is the fruit of cross-strait exchanges based on the concept that the mainland and taiwan belong to one china. cross-strait relations are a key campaign issue in the run-up to the presidential election in taiwan next month. an opinion poll suggests tsai ing-wen from the democratic progressive party has a strong lead. the party rejects the one-china policy. a spokesperson for the taiwan affairs office in beijing has stressed the importance of the one china policy. >> translator: the cross-strait dialogue mechanism could even collapse without a consensus on the one china policy. >>> north korea's state-run media says a key diplomat and close aid to kim jong-un has died in a traffic accident. the reports a state funeral will be held. the korean central news agency says kim died on tuesday at the age of 73. >> translator: kim yang-on secretary of the workers p