Cheap and expensive
It is a Chinese idiom. Pinyin is Ji à NLI à NGU à f à, which means to sell at a low price and sell at a high price. It comes from the biography of Zheng Xuyu in the new book of Tang Dynasty.
The origin of Idioms
In the biography of Zheng juiyu in the new book of Tang Dynasty, it is said that "as far as Henan Province is concerned, we should be clean and benefit from it. We should pay attention to the low income and the high income, so as to make it convenient for the people."
Idiom usage
It refers to the ancient measures to stabilize grain prices.
Cheap and expensive
to pursue goodness is as difficult as ascending a mountain - cóng shàn rú dēng
Once the power is in hand, the order will be executed - yī zhāo quán zài shǒu,biàn bǎ lìng lái xí
Against heaven and against the people - nì tiān wéi zhòng