Useful. The award-winning certificate of picture book story speech is an official certificate issued by Nanjing, which can be used to prove personal ability and help job hunting. Jiangning District, one of the eight main districts in Nanjing, is located on the south bank of the lower reaches of the Yangtze River, bordering Jiangsu and Anhui in the southwest and Qixia District and jurong city in the east.