新台阶

Traditional (Taiwan): 新臺階

xīntáijiē ㄒㄧㄣ ㄊㄞˊ ㄐㄧㄝ

    • a new level of achievement
    • a new stage

Character by character

Saying俗语俗語

Idiom惯用语 · In everyday use

Literally
new step
Meaning
A new level or stage of achievement. Approving.

Sources