Where does the word dense come from? Thank you, everyone.

Word explanation 1 pinyin: dense y and ny ū n meaning: hazy weather English: [dense mist] Lingshan is full of colorful and empty water. -Don Zhang Jiuling's "Hukou Looking at Lushan Waterfall Spring" is shrouded in clouds, also known as "smoke" and "smoke". I opened the curtain in the morning and found it was hazy outside the window. Explanation of words 2 1. In ancient times, it refers to the combination of yin and yang. The Marriage of the White Tiger quotes Yi: "The secret of heaven and earth is the purity of everything." Accordingly, this version of "Xiayi Cohesion" is called "Xu Kun". In the Southern Dynasties, Chen's "Persuade into Emperor Liang Yuan's Watch": "Since the chaos of the world, Li Lianwang and Bu Longtu, there are birds in the text." Biography of Old Tang Li Fu: "I was ignorant at first, and I was full of vitality." Song Zhou Mi's "Qi Dong Yu Ye Jia Shoushou" words: "Listen to everything, never look at each other, silently look at each other." The Qing Palace treasured "Distinguishing Immortals": "Immortals are not Song Qiaolun, nor are they heroic; Peter is a fallen ghost, and Taiyi dominates first. " 2. Confused look; Diffuse appearance. "Jiuhua Fan Fu" written by Cao Wei in the Three Kingdoms: "The effect of dragons is like cicadas, and the method is like rainbows." Li Daoyuan of the Northern Wei Dynasty wrote in "Notes on Water Classics: Qushui": "The title of Yin given by Emperor Wu of the Han Dynasty must be recommended as a fountain. Ding went to Zhongshan with a cover. "Don Su Weidao's Ode to Fog": "The caves and valleys are dense, and people are far away." The third fold of the first volume of The West Chamber in Yuan Dynasty: "It's not light clouds and light fog, it's just the popularity of cigarettes, and there is no difference between the two." The first time of "Evil Sea Flower": "But I feel that spring is coming, and the fragrance is floating out of the curtains." 3. refers to the diffuse smoke. The first scene of Zhou Yu's sunrise: "(Chen Baili) He skillfully lit a cigarette and spit out a light blue." 4. Strong smell. Multi-fingered incense. In the Southern Dynasties, Shen Liang wrote a poem about Fang Shu: "It is not fragrant, but uneven and colorful." Qing Li Yu's "Follow the Fate, Instrument Play, Chair": "Burning this incense, from bottom to top, can make the bones penetrate." Philosophical terminology China's philosophical terminology is the same as "Ruokun". Everything changes and grows because of interaction. In the philosophy of Zhang Zai and Wang Fuzhi, it is used to describe the motion state of the cosmic entity "Qi".