hé​fén​mén​xià

a famous teacher with many distinguished students

河汾门下 河汾門下 hé​fén​mén​xià
a famous teacher with many distinguished students
Originally referring to the many talented students who studied under the Great Confucian scholar Wang Tong between the Yellow River and the Fen River at the end of the Sui Dynasty; now used as a set phrase to describe a renowned master who has many outstanding disciples.