citystring
City code for filtering jobs. Supported values: 100010000 (all cities), 101010100 (Beijing), 101020100 (Shanghai), 101280100 (Guangzhou), 101280600 (Shenzhen), 101210100 (Hangzhou), 101270100 (Chengdu), 101190100 (Nanjing), 101200100 (Wuhan), 101230200 (Xiamen), 101040100 (Chongqing), 101250100 (Changsha), 101180100 (Zhengzhou), 101070200 (Dalian). Unsupported codes fall back to the main homepage (all cities).
