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Science / Ancient

Zhang Heng

78 — 139张衡

Chinese scientist and statesman (78–139)

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Born78
BirthplaceNanyang
Fieldscartographer, mathematician, astronomer
01 / A LIFE IN CONTEXT

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 ↗

02 / THROUGH THE YEARS

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.

  1. 78
    Life

    Born in Nanyang

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  2. 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.