Xuân Trường is a rural district of Nam Định province in the Red River Delta region of Vietnam. According to An Nam chí lược, An Nam chí …Xuân Trường is a rural district of Nam Định province in the Red River Delta region of Vietnam. According to An Nam chí lược, An Nam chí nguyên and Đại Việt sử ký toàn thư, around 1010, there was an administrative unit in the Red River estuary area called Hải Thanh rural district. However, its boundaries are still unclear.