Time and substance
As a Chinese idiom, the Pinyin is l ì sh í J í w ù, which means to save the world. From the book of heros edited with Lu.
The origin of Idioms
Fang Xiaoru of the Ming Dynasty wrote the book of Xilu with Lu: "fortunately, the ancients encouraged themselves and made it their duty to benefit the time and the things, so that the poor and the lonely could learn from it."
Idiom usage
Used as an object or attribute; used in writing
Time and substance
Fish in three days and net in two - sān tiān dǎ yú,liǎng tiān shài wǎng