Zi Collection, Upper Volume, Page 10, Entry 01 Radical: Person (rén) Pronounced kui (falling tone) Explained in "Explanations of Characters (Shuowenjiezi)" as the bone between the knee and the lower leg. Explained in "Guangyun" as the appearance of the knee touching the ground. Also, in "Jiyun," pronounced kui (falling tone), same as "kui." Explained in "Leipian" as the appearance of the skull.