Chengdu capital city of the Chinese province of Sichuan, Anshun Bridge over the Jin river with modern skyline skyscraper building in background haze foggy day

chengdu sichuan china chinese smart city cityscape skyline capital city modern province jin jin river river water anshun bridge bridge anshun traffic smog co2 air pollution pollution chinese capital chinese city skyscraper buildings crossing finance asia development architecture landmark office business metropolis downtown economy reflection urban infrastructure ancient old pagoda zen