Wow, it is 1440 km from Beijing to Shanghai by bus. Why not going by bullet train, comfortable, safe and faster. Zhaogongkou bus station in Beijing has bus to SHanghai at 17:00. Good Luck~

thanks Mr qi , if by bullet train how long time and fare cost ? in which station ? beijing railway station ? which road . thanks a lot

Beijing Railway Station has 5 bullet trains (21:15, 21:20, 21:30, 21:35, 21:40) ans Beijing South Railway Statio has one bullet train (11:05) to Shanghai. You can choose the closer one. The train takes 10 hours and cost: 452/542RMB
Beijing Railway Statiom is next to Chongwenmen, can be reached by Subway Line 2. Beijing South Railway Station is within 3rd Rong Road, between Kaiyang Road and Majiabao Road. If you travel after Sep 28, South Railway Station can be reached by Subway Line 4.