Changzhou or Jiangyin?

It must be Changzhou University. Changzhou is a prefecture-level city in Jiangsu Province, and Jiangyin is a county-level city under the jurisdiction of Wuxi, a prefecture-level city in Jiangsu Province. Jiangyin has always belonged to Changzhou in history, but now Jintan and Liyang have belonged to Zhenjiang and Nanjing for thousands of years. Jiangyin and Jintan were both slaughtered in the Qing Dynasty. Jiangyin was brutally slaughtered by the Qing army in the early Qing Dynasty, leaving only 53 people in the city. But it was Jiangnan people from Suzhou, Wuxi and Changzhou who moved to Jiangyin, so the Wu dialect in Jiangyin was preserved. Similarly, Jintan was bloodied by long hair in the late Qing Dynasty, but a large number of immigrants moved to Jintan from Jianghuai Mandarin area in northern Jiangsu, so the main language of Jintan is Subei dialect, and at least 50% of Jintan people can only speak Subei dialect. Jiangyin is the Wu dialect area of Su-Xi-Chang, and Jintan is the only area of Su-Xi-Chang facing North Jiangsu.