北朝：北魏（后分裂为东魏、西魏）、北齐、北周的合称

Northern Dynasties (386-581), namely, Northern Wei (北魏，386-534, which was later split into Eastern Wei 东魏，534-550, and Western Wei 西魏，535-556), Northern Qi (北齐，550-577) and Norther Zhou (北周，557-881)