Wuxi is in the south of Jiangsu province, and it's about 130 KM from Shanghai. Wuxi is famous for Taihu lake. And many people travel to Wuxi every year.
If you want to go to Wuxi from Shanghai, you can take train. With high speed train you only need about 45-60 minutes. With common train you need about 1.5-2 hours. There are many high speed trains from Shanghai Hongqiao airport-railway station to Wuxi.
And you also can go to Wuxi from Shanghai by car. There are highways between Shanghai and Wuxi.
There are 2 main railway stations in Wuxi, Wuxi railway station and East Wuxi railway station. There are buses and metro(subway) link the two railway stations.
Wuxi also has a airport-Sunan shuofang international airport. There are air lines from Wuxi to Beijing, Hongkong, Kunming, Chengdu, Dalan and many cities.