I am from Yonganzhou Town, gaogang district, Taizhou, Jiangsu. I want to ask why people there often call Taixing people Jiangbei people, but they are Jiangbei people themselves.

Because it turns out that Yonganzhou is an island and Madian (now next to Guangming Chemical) is a river, but the river is very small. Later, I don't know why Jiajiang filled it out. At that time, Madian people were called Yonganzhou people from the south of the Yangtze River. We call it Jiangbei. In fact, many old people in Yong 'an know it. You can ask them!