Answer: Niushan Tuozuo.

The Sorrow of Niu Mountain

niú shān zhī bēi

Explanation of the lamentation on Niu Mountain. To ridicule the sadness caused by inappropriate thoughts

The structure is more formal idiom

Used as an object; refers to the sadness caused by inappropriate thoughts

Example sentences Don’t you think the tragedy of Niu Shan is ridiculous?

Idiom story During the Spring and Autumn Period, Qi Jinggong Lu Chujiu was a monarch who lived a luxurious life and was greedy for enjoyment. He took Prime Minister Yan Ying and ministers Guo Huizi and Gao Zhaozi to visit the top of Niushan Mountain. Facing the capital Linzi, Qi Jinggong became very angry. Yan Ying lamented that it would be great if he could live forever and rule forever. After saying this, he shed tears. The ministers agreed, which made Yan Ying feel ridiculous.