The long-distance bus station of Pudong Airport has direct shuttle bus to Jiaxing, leaving from the airport at 11:10, 13:10, 16:10, 18:10. If you can no make it, I recommend you go to Shanghai Long-distance Bus Terminus next to Shanghai Railway Station and Shanghai SOuth Bus Station next to Shanghai SOuth Railway Station. Bailianjing has few buses to Jiaxing and there are direct shuttle bus from Pudong to Shanghai Railway Station (Line 5) and SOuth Railway Station (Line 7).