Guardian: Jiang Kejun, senior researcher at the National Development and Reform Commission’s Energy Research Institute, was one of the first Chinese academics to study the concept of low-carbon cities. With his colleagues, he is currently producing a low-carbon programme for Shenyang in north-east China. During the recent climate-change talks in Tianjin, Liu Jianqiang spoke to Jiang about low-carbon cities. Liu Jianqiang: “Low-carbon city” seems to have become a buzz word, with many places in China adopting…