People could observe the movement of the sun, moon and stars.
2
公元132年张衡创制地动仪、浑天仪和指南车。
AD 132. Zhang Heng created the seismograph, the armillary sphere, and the south-pointing chariot (compass).
3
历代器物上都有龙的图饰，这是台中自然科学博物馆中陈列的仿宋代浑天仪模型。
The dragon has appeared on Chinese artifacts throughout the ages. This is the model of a fake Sung armillary sphere on display in the Taichung Natural Science Museum.
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