In October, 2011, up to 100 police and government study groups from Shanghai, Jiangsu, Shandong, Zhejiang, Anhui, Xinjiang, Guizhou and so on, visited Hannon.
In October, 2011, up to 100 police and government study groups from Shanghai, Jiangsu, Shandong, Zhejiang, Anhui, Xinjiang, Guizhou and so on, visited Hannon.