點到為止 [点－为－]

Jyutping dim2 dou3 wai4 zi2
Pinyin diǎn dào wéi zhǐ

Definitions (Wiktionary)
  1. phrase, idiomatic
    to conclude a fight with an opponent by a touch
  2. phrase, figuratively, idiomatic
    to make a point without going into details