I don't think there is a direct high-speed train from Nantong to Suizhou, which mainly includes the following points:

First, Nantong belongs to the eastern coastal city of China. Travel demand mainly leads to Shanghai and Suzhou in the south, Yangzhou and Nanjing in the west, and Yancheng and Xuzhou in the north, among which the demand for going to the south is the strongest. However, there is a natural barrier between Nantong and Shanghai and Suzhou, which is difficult to cross. In the past, bridge-building technology was not developed enough.

There is no through train from Nantong to Suizhou South. You can change trains at the following stations.

Nantong Station-Transfer Station Mileage 284- Suizhou South Station Mileage.