Main station: opposite Huitong, take bus No.50 and transfer to 1.
North Station: Take the No.50 bus to the railway station, then take the 1 bus, or directly take the No.52 bus.
There is also Xinnan Station (where there are more long-distance buses), and bus No.46 goes directly.
There is also a relatively new East Station, next to Foxconn. Take a tricycle from 3 yuan to the vicinity of the Customs Building (about 3 miles away).
There are details above, and most people don't know much, so get extra points.