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Chapter 69 Supplementary picture

History of Science and Technology in Ancient China 金秋鹏 79Words 2018-03-20

Warring States·Dujiangyan

Warring States · Embroidered Luo

Western Han Dynasty Changxin Palace Lantern

Warring States Zun, plate

Western Han Dynasty Suanchou

Restoration Model of Zhang Heng Houfeng Seismograph in the Eastern Han Dynasty

Southern Song Dynasty Anping Bridge

Song·Longquan Kiln Celadon Boat Shape Note

Yuan Dynasty Bronze Fire Gun

Yuan Dynasty Dengfeng Observatory

Ming Dynasty Jiayuguan

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