Xinhua: The working group meeting of the United Nations Climate Change Conference will be held in north China’s coastal city of Tianjin from Oct. 4 to 9, Xie Zhenhua, China’s top climate change negotiator, said at a press conference on Wednesday. It is the final meeting before the United Nations Climate Change Conference to be held in Cancun at the end of this year, and the first time that such formal meeting has been convened in China. About 3,000 delegates from party and observer …