As shown in the following figure:
Kuai, a Chinese first-class word, is pronounced kuài, which was first seen in Xiao Zhuan (in Shuo Wen Jie Zi). Its original meaning refers to happiness, that is, the so-called "joy" in Shuo Wen Jie Zi, and its extension refers to quickness, straightforwardness and readiness.
Kangxi Dictionary
The first collection is faster than the second collection
Tang Yun, Ji Yun, Yun Hui and Zheng Yun are both painstakingly inscribed. Shuowen: Happy, heartfelt and loud. Guang Yun: Satisfied, but also. "Biography of Gai Xun in the Later Han Dynasty": Wang Yun said: "If you want quickly, you can be a captain. Who can write it?"
another rhyme: refreshing and urgent.
The Warring States Policy: Be courteous but not quick. Note: It is called Zongyi.
and "record of dropping out of farming": the world calls it "unhappy" when there is a disease. Biography of Hua Tuo in the Later Han Dynasty: Are you unhappy?
last name.