Dai Bingguo (L), the special envoy of Chinese President Hu Jintao, hands an autographed letter from Hu to North Korea's leader Kim Jong-il in Pyongyang in this September 18, 2009 video grab. Kim met the special envoy of Hu Jintao on Friday, news agencies from both countries reported, following easing tensions over the North's nuclear weapons programme. The meeting between Kim and Dai, a senior Chinese diplomat, offered a sign of warming ties between the two countries, which had been strained after Pyongyang staged its second nuclear test explosion in May.