i am a Pakistani. i am being hired as an english teacher at jiangsu. i want to get a visa.

I need to know if I want a tourist type. how much would it cost me at initial level. is it possible that I can get work permit after reaching there as getting work permit? for a Pakistan seems difficult. since I am really hard working teacher here but its not working out so wanna grab the opportunity and then wanna handle rest of the things.