learn while young and practise when strong
Chinese idiom, Pinyin is y ò uxu é Zhu à NGX í ng, which means to be diligent in learning when you are young and give full play to negative in your prime. It's from Mencius, King Liang Hui.
The origin of Idioms
"Mencius · Liang Hui Wang Xia": "madam is young but learns, strong but wants to do."
Idiom usage
As a predicate or attribute; used to teach. I will live up to my ambition if I do my way. (Biography of Mr. Yuzhuang by Zhao Bi in Ming Dynasty)
learn while young and practise when strong
exemplary conduct and nobility of character - zhēn fēng liàng jié
like having prickles on the back - bèi shēng máng cì