Read Edit View history 张衡 Zhāng Héng Zhang Heng Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 张衡/張衡 · Zhāng Héng · Zhang Heng 2026/03/04 张衡 / 張衡 Zhāng Héng Zhang Heng Zhang Heng (78-139), a great Han dynasty astronomer and mathematician. 张衡发明了世界上第一台地动仪。 proper name created sense Mar 4, 2026, 02:25 AM