Mao Collection, Upper Volume Radical: Heart (xīn) 快 Kangxi stroke count: 8 Page 377, Entry 29 Tang Dynasty Rhyme Dictionary (Tangyun), Collection of Rhymes (Jiyun), Rhyme Meetings (Yunhui), and Correct Rhymes (Zhengyun) all provide the pronunciation kuai (falling tone). According to the Explaining Graphs and Analyzing Characters (Shuowen), it means joy. It is formed from the Heart radical with kuai acting as a phonetic component. According to the Extensive Rhyme Dictionary (Guangyun), it means satisfied or acceptable. In the Biography of Gai Xun from the History of the Later Han (Hou Hanshu), Wang Yun asked: Who can serve as the Colonel Director of Retainers to achieve satisfaction. Additionally, according to the Augmented Rhymes (Zengyun), it means refreshed, or rapid and fast. In the Strategies of the Warring States (Zhanguoce), it says: Respectful of instructions but not satisfied. The commentary explains this as meaning indulgent. Also, according to the Record of Farming Interruption (Chuegenglu), the world refers to illness as being not satisfied. In the Biography of Hua Tuo from the History of the Later Han (Hou Hanshu), it says: The body feels unwell. It is also a surname. It can also be pronounced kui (falling tone) to rhyme with the passage in the Book of Changes (Yijing), where it is said: The heart is not yet satisfied; and in the Great Mystery (Taixuanjing) by Yang Xiong, which states: Without ease and without grace, ritual and music are abandoned. The binding is broken and the cords are severed, the heart is truly satisfied. The original form was written as the character with the heart radical and the component meaning to split. The common, simplified form is written as 快.