the clouds melt and the mists disperse
As a Chinese idiom, Pinyin is y ú nxi à ow à s à n, which means like smoke and cloud vanishing. It means things disappear completely. It comes from the imperial edict of giving Zhangsun Wuji the right hand to shoot.
The origin of Idioms
Li Shimin of the Tang Dynasty gave the imperial edict to the right Minister of Zhangsun Wuji: "the point of fighting is that the clouds disappear."
Idiom usage
As a predicate; used of a person's mood
Examples
Although the emperor was angry, it suddenly disappeared. Zhuxi of Song Dynasty: the four things about leaving the body for the banquet
the clouds melt and the mists disperse
pass from mouth to mouth with approbation - chuán wéi měi tán
make up for possible shortages with surpluses - yǐ fēng bǔ qiàn
eat sparingly because of poverty - duàn jī kuài zhōu
the west wind and fallen leaves -- an autumn scene - xī fēng luò yè