Astronomical Calendar and Medical Achievements in Xia, Shang and Zhou Dynasties ...

In the Bronze Age of Xia, Shang and Zhou Dynasties, China made a series of achievements in astronomy, calendar, medicine, biology and geography, which created conditions for social progress in the Iron Age.

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Calendar:

Xia: Xia recorded a year's knowledge of phenology and astronomical phenomena.

Quotient: The lunar calendar divides a year into 12 months. The method of "observing the sky with dry hands" is the longest method in the world.

Astronomy:

Xia: the earliest dietary record in ancient books

Shawn: The solar and lunar eclipses recorded in Oracle Bone Inscriptions have proved to be very reliable.

Zhou: The solar eclipse was recorded at the end of the Western Zhou Dynasty, with an exact date.

Medicine:

Shang: In the writings of Shang Dynasty, 265,438+0 diseases were recorded, which is also the oldest dental record in the world.

Zhou: The Zhou Dynasty already had branches of medicine, such as internal medicine, surgery, nutrition and health care and veterinary medicine.