前人栽樹，後人乘涼 [－－－树－后－－凉]

Jyutping cin4 jan4 zoi1 syu6 ， hau6 jan4 sing4 loeng4
Pinyin qián rén zāi shù ， hòu rén chéng liáng

Definitions (Wiktionary)

proverb
A generation sweats for the benefit of future generations; One generation sows (i.e. labours) and the next generation reaps (the fruits of labour)
(syn.) 後人乘涼, 后人乘凉, 前人種樹, 前人种树

Jyutping cin4 jan4 zoi1 syu6 , hau6 jan4 sing4 loeng4
Pinyin qián rén zāi shù , hòu rén chéng liáng

Definitions (CC-CEDICT)