登龙门

Traditional (Taiwan): 登龍門

dēnglóngmén ㄉㄥ ㄌㄨㄥˊ ㄇㄣˊ

    • to rise suddenly to fame or high status, especially through exam success

Character by character

Saying俗语俗語

Idiom惯用语 · Rarely used now

Literally
climb the Dragon Gate
Meaning
Same as 跳龙门: a sudden rise to fame or high status, especially through success in exams.

Sources