I'll arive at PVG Airport and then catch a bullet train to Hefei. how to go from Airport to station

As I know, both Hongqiao Railway Station and Shanghai Railway Station provide the bullet trains.

To Hongqiao: you can take shuttle bus line 1 directly there, which takes about 1h, CNY30. Or take metro line 2 there, and it takes about 1h 20 minutes, CNY8.

To Shanghai Station: take shuttle bus line 5 there, and it takes about 1h, CNY22. Or take metro line 2 and transfer to line 4 at Century Avenue. Then, get off at the station. It takes about 1h 20 minutes and CNY7.