5. Nantong, referred to as Tong, was called Tongzhou in ancient times, also known as Jinghai, Chongzhou, and Chongchuan, and is a prefecture-level city in Jiangsu Province. There are five large steel mills in Nantong, namely Nantong Baosteel Co., Ltd., Tongzhou District Zhendong Steel Rolling Mill, Nantong Newco Steel Co., Ltd., Nantong Yingrun Steel Co., Ltd., and Nantong Fengbo Steel Co., Ltd.