Human feelings are fierce
It's used to describe people's unrest.
Idioms and allusions
[source] Volume 9 of Helin Yulu, the great Sutra of Song Dynasty: "Shaoxi Jiayin, Xiaozong Shengya, Guangzong disease, can't mourn, Chinese and foreign human feelings are fierce." Chapter 78 of the chronicles of the states of the Eastern Zhou Dynasty: "at that time, human feelings were fierce, and there were many people who asked for the letter from zaosichi." During the Jiawu period, Shouzhang and Wang Lun were in trouble. They were very close to the canal. Lu Zhongcheng, miscellany of Xiaoting
Discrimination of words
"Usage" is used as predicate and attributive; it is used in written language
Human feelings are fierce
hardship of travel without shelter - cān fēng sù xuě
be toughened and hardened into steel - bǎi liàn chéng gāng
Eight difficulties and three disasters - bā nàn sān zāi