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Junior Middle School History: Similarities and Differences between Cai Lun and Zhang Heng?
1 similarity
They are all outstanding scientists in ancient times. 1 year, Cai Lun invented (some scholars think that papermaking has been improved), and Zhang Heng invented the seismograph and other astronomical instruments.
Both of them lived in the Eastern Han Dynasty, Emperor Wudi and Emperor Wudi.
2 different
1 Cai Lun is a eunuch, and his greatest contribution is papermaking. Born in a scholarly family, Zhang Heng is an astronomer, mathematician, inventor, geographer, cartographer, writer and scholar.
Cai Lun's political color is inevitably fawning on eunuch status and centralized autocracy, while Zhang Heng is a typical Confucian politician.
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