Mao Collection, Upper Volume Radical: Heart (xīn) Kangxi strokes: 10 Page 383, Entry 25 Ancient form. Guangyun (Broad Rhymes) and Jiyun (Collected Rhymes) and Yunhui (Collection of Rhymes) state it is pronounced heng. Shuo Wen (Explaining Graphs and Analyzing Characters) states it means constant. Also the name of a hexagram. Book of Changes (Yijing), Heng Hexagram: Heng means enduring. Also, Book of Rites (Liji), Monthly Ordinances: Patterned embroidery has its constant. Commentary: Constant means established custom. It must follow established methods. Also, Rites of Zhou (Zhouli), Summer Offices, Minister of Bows and Arrows: Constant arrows and bi arrows, used for shooting at a target. Commentary: Constant arrow, a steady and settled arrow. Bi arrow resembles this. Also the name of a mountain. Erya (Approaching Elegance), Explaining Mountains: Heng Mountain is the Northern Peak. Records of the Grand Historian (Shiji), Commentary on Annals of Xia: Heng Mountain is located in Hengyang County, Ding Prefecture. Comprehensive Customs (Fengsu Tong): In the north is Heng Mountain. Heng means constant. All things hide and store away in the north, which is constant. Also the name of a prefecture. Formerly Hengshan Commandery during the Han dynasty, renamed Heng Prefecture by Emperor Wu of Northern Zhou, named after the mountain. Also a surname. Duke Hui of Heng, a grandee of the State of Chu. Also pronounced with a departing tone. Zhuanzhu Guyin (Ancient Pronunciation by Transferred Meanings) states it is pronounced gen. Book of Odes (Shijing), Lesser Odes: Like the constant moon. Commentary: Pronounced gen. Refers to the first quarter moon. It also appears as a variant form (geng). Also means everywhere. Book of Odes (Shijing), Greater Odes: Sowing black millet everywhere. Commentary: Pronounced gen. Means to plant everywhere. Note: The construction of this character varies. Works such as Shuo Wen (Explaining Graphs and Analyzing Characters), Jiyun (Collected Rhymes), Liushu Tong (Six Categories of Writing), Shuo Wen Chang Jian (Long Notes on Explaining Graphs), and Jingyun Zheng E (Refining Principles and Correcting Errors) write it using the moon component or the boat component, debating and altering it, sometimes simplifying or merging it; this is likely based on conjecture. Because it is far removed from antiquity, the large seal script and small seal script already differ significantly, and this is even more so for clerical and regular script. All discussions concerning the shape of the character are omitted here.