If you take the high-speed train from Xuzhou to Wuxi, you will only go to Wuxi East Station because you take the Beijing-Shanghai high-speed train. "Wuxi Station" and "Wuxi New Area Station" are stations on the Shanghai-Nanjing high-speed railway, and the high-speed railway departing from Xuzhou will not go to these two stations. By the way, bus No.77 goes from Wuxi station of Shanghai-Nanjing high-speed railway to Jiangda.
After taking the high-speed train from Xuzhou to Wuxi East Station:
Take bus 1 16 (stop 23) and get off at CDC (People's Hospital * Children's Hospital), then transfer to bus 77 (stop 13) and get off at Jiangnan University (Wuxi Vocational School), north gate of Jiangda. The whole journey is about 1 hour.