我国南北朝时期，据有江南地区的宋﹑齐﹑梁﹑陈四朝的总称——汉语大词典  @zh

Southern Dynasties, Chinese (Pinyin) Nanchao, or (Wade-Giles romanization) Nan-ch’ao, (AD 420–589), four succeeding short-lived dynasties based at Jiankang (now Nanjing), which ruled over a large part of China south of the Yangtze River (Chang Jiang) during much of the Six Dynasties period. The four dynasties were the Liu-Song (420–479), the Nan (Southern) Qi (479–502), the Nan Liang (502–557), and the Nan Chen (557–589). Although it was a time of comparative political weakness, Chinese culture flourished during this period.——Encyclopedia Britannica  @zh

南朝  @zh