Summary | The post office is built of energy-saving materials
and powered by solar energy.The Yangtze basin covers 1.8
million square kilometers.The river links major cities
including Shanghai, Nanjing, Wuhan and Chongqing.| People's
Daily Online | China.org.cn| CNTV | China.| Global Times |
Ecns.cn | China Youth International | Visit Beijing | ...
en.ce.cn | 31 July 2017