Unlike Xuzhou, where is Rugao under the adminstration of?
Rugao: Rugao () is a county-level city under the administration of Nantong, Jiangsu province, China, located in the Golden Triangle region on the northern (left) bank of the Yangtze River. Xuzhou:  It is known for its role as a transportation hub in northwestern Jiangsu, as it has expressways and railway links connecting directly to the provinces of Henan and Shandong, the neighboring port city of Lianyungang, as well as the economic hub Shanghai.
i don't know