PDF e-book download of the ancient book of astronomy and calendar “Seven Politics and Food Harassment”. (For content clarity, please refer to the screenshot below) Introduction China is one of the countries with the earliest start and fastest development of astronomy in the world. Astronomy is also one of the four most developed natural sciences in ancient China. Others include agriculture, medicine and mathematics.. .

The ancient book of astronomy and calendar “Seven Politics and Meteorism” PDF e-book download. (Content clarity, please refer to the screenshot below)

Introduction

China is one of the countries with the earliest start and fastest development of astronomy in the world. Astronomy is also one of the four most developed natural sciences in ancient China. Others include agriculture, medicine and mathematics. Astronomy has repeatedly innovated excellent calendars, amazing inventions and creations, and insightful cosmology. In history, all occupy an important position. In ancient China, full-time astronomical officials were set up, specializing in “observation and timing”. As early as the Yangshao culture period, people described the image of the radiant sun, and further recorded the changes on the sun, depicting sunspots on the edge of the sun that are as big as projectiles and in an oblique shape. The ancient Chinese calendar includes not only the calculation of solar terms, the distribution of the number of days in each month, the arrangement of months and leap months, etc., but also includes many astronomical contents, such as the calculation and forecast of the occurrence time of solar and lunar eclipses and the visible situation, the calculation and prediction of the positions of the five major planets and Forecast etc. On the one hand, it shows that ancient China attached great importance to astronomy and astronomical phenomena. At the same time, such astronomical phenomena are also one of the important means to verify the accuracy of the calendar. And six or seven hundred years ago, Guo Shoujing was able to measure so precisely, which is really remarkable

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