1. Solstice is a time of calendric importance.

2. China's astronomical calendric system sees its foundation in the Period of Spring and Autumn and Warring States. Deep world outlook is embraced in Zhuangzi's rich thought.

3. Another book in 1975 also spotlighted the Maya calendric roundup.

4. In the early period, the function was mainly manifested in the interpretation of the calendric numbers by the Yi numbers. This gradually faded away after the Tang Dynasty.

5. Ancient China made unique contributions to many areas of science including astronomy, calendric system, geography, thematics, agriculture, medicine and the humanities.

6. Ancient China made unique contributions to many areas of science including astronomy, calendric system, geography, mathematics, agriculture, medicine and the humanities.

7. In the early period, the function was mainly manifested in the interpretation of the calendric numbers by the Yi numbers.