beijing/seoul traditional friendship china north korea represent valuable wealth people china say special envoy meet high-ranking north korean official mention crisis north korea weapons song tao head rule chinese communist party international department visit pyongyang discuss outcome recently conclude communist party congress china president xi jinping cement power brief statement date friday report chinese media saturday international department say song represent xi report north korean official choe ryong hae outcome congress song choe also talk relations party countries department say say traditional friendship china north korea found cultivate countries former old leaders valuable wealth two people say side must work hard together promote development relations two party two countries benefit two people department make mention north korea nuclear missile program strongly oppose china north official kcna news agency say song inform choe china 19th national congress detail stress china stance steadily develop traditionally friendly relations two party countries song arrive friday clear long north korea china repeatedly push diplomatic solution crisis north korea development nuclear weapons missiles carry recent months limit high-level exchange north korea last time china special envoy north korea visit country february last year song trip come week u.s. president donald trump visit beijing part asia tour press great action rein north korea especially china north korea 90 percent trade influential state-run chinese tabloid global time say editorial unwise expect much trip say key mission inform north korea party congress beijing song magician newspaper say key ease situation peninsula lie hand washington pyongyang side insist logic refuse move direction even song open door talk door could close time clear whether song meet north korea youthful leader kim jong un kim president xi exchange message congratulations thank chinese party congress neither leader visit country since assume power song department charge party relations foreign political party traditionally serve conduit chinese diplomacy north korea china new special envoy north korea kong xuanyou take position august believe visit country since assume job china say work north korea boost tie envoy visit