Zhang Heng
78 — 139张衡
Chinese scientist and statesman (78–139)
The story, in brief.
Zhang Heng, courtesy name Pingzi, formerly romanized Chang Heng, was a Chinese polymathic scientist and statesman who lived during the Eastern Han dynasty. Educated in the capital cities of Luoyang and Chang'an, he achieved success as an astronomer, mathematician, seismologist, hydraulic engineer, inventor, geographer, cartographer, ethnographer, artist, poet, philosopher, politician, and literary scholar.
Introduction from Wikipedia contributors, CC BY-SA 4.0. Read the full biography ↗
A life in milestones.
Selected records from Wikidata. Ages are approximate; “c.” marks uncertain dates. This is a starting point for exploration, not a complete life history.
This edition has life dates for Zhang Heng; more sourced milestones are still to be added.
- 78
- 139~ age 61
Behind this profile
Sources retrieved 2026-11-01. Dates and milestones: Wikidata contributors, CC0 ↗. Biographical introduction: Wikipedia contributors, CC BY-SA 4.0. Ancient dates and traditional biographies may be disputed; consult the linked records.
Portrait: Windmemories · CC BY-SA 4.0 · Original and attribution ↗. Display cropped and desaturated.




