Thoughts of clouds and trees
Yunshuzhisi, a Chinese idiom, Pinyin is y ú NSH ùī zh ī s ī, which means to compare the feeling of missing after a friend leaves. It's from Li Bai's memory in spring by Du Fu of Tang Dynasty.
The origin of Idioms
Du Fu of the Tang Dynasty wrote a poem in memory of Li Bai in spring: "the spring trees in Weibei, the sunset clouds in Jiangdong."
Idiom usage
Yao xueyin's Li Zicheng: "it's been three years since I made my last farewell to my elder brother, and I'm very grateful." Yao xueyin's Li Zicheng, Vol.1, Chapter 26: "after several years of separation, I often think of the clouds and trees."
Thoughts of clouds and trees
weakness lends wings to rumours - kōng xué lái fēng
devote oneself heart and soul to - zhuān xīn zhì zhì