Mao Collection, Lower Volume Radical: Tap (pū) Pronounced xiao Kangxi strokes: 20 Page 476, Entry 23 Guangyun: Pronounced xiao. Jiyun: Pronounced xiao. Yunhui: Pronounced xue. Shuowen Jiezi (Explaining Graphs and Analyzing Characters): To awaken or enlighten. The seal script form is a simplified version of the character for learn (xue). Yupian (Jade Chapters): To teach. Book of Documents (Shujing), Pan Geng chapter: Pan Geng instructs the people. Commentary: This means to teach. Also in the Yue Ming chapter: Teaching is half of learning. Commentary: Teaching leads to the realization of one's own limitations, which constitutes half of the learning process. Also Jiyun: Pronounced xue. The meaning is the same. Yunhui: The character for learn (xue) was originally written as this character in the Shuowen Jiezi. Today, it is pronounced xiao, while the character for school (xuexiao) is written only as learn (xue). Note that in the ancient text of the Book of Documents, the character for learn (xue) is always written as this character. The Lishi (Interpretations of Clerical Script) mentions Gao Biao as a master of this character. Also, to reach fifty and teach is the same as the character for learn (xue). It was originally in the Teach radical in the Shuowen Jiezi, but it is now combined here.