Do you know what technologies are available in China?

We all know that China's four great inventions are papermaking, printing, compass and gunpowder. In fact, in addition to these four great inventions, there were many great inventions in ancient China. China's ancient science and technology were brilliant and wonderful, but most scientific and technological inventions have been unconsciously integrated into our lives for many years, making it easy for people to ignore their arduous creative process. The following examples are all the creations of China in ancient times.

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Such as the lunar calendar. Many people confuse the lunar calendar with the lunar calendar. In fact, they are different. The lunar calendar is neither a lunar calendar nor a solar calendar, but a combination of yin and yang formulated by the ancients according to the law of crop growth. \ n \ n \ People grow crops according to the lunar calendar, from which 24 solar terms are derived. The lunar calendar has been used for more than 2000 years, which has a great influence on us so far. Many people celebrate their birthdays in the lunar calendar, and getting married is also a good day through the lunar calendar!

And rice. Rice was also one of the most important technologies in ancient China. We always say thanks to Grandpa Yuan Longping for feeding us, but in fact we should thank the ancients for inventing rice. China is one of the earliest countries to grow rice in the world, with a history of 12000. During the Song Dynasty, rice played the role of "national staple food" and even exported to all parts of the world. Japanese, Korean, Thai and Cambodian all introduced rice cultivation techniques from China.

And mathematics pi ≈ 3. 14 159265359 ... Do you know that the earliest pi was put forward by China ancient algebra scientist Liu Hui? In the Northern and Southern Dynasties, mathematician Zu Chongzhi made Pi accurate to seven decimal places, which was nearly a thousand years ahead of the world.

Also, in the eyes of foreigners, China is synonymous with "porcelain"; Zhao Zhouqiao, the first bridge in the world; There is no nail riveting of the ancient building "tenon and mortise"; Defending the enemy of the Great Wall thousands of miles away, and so on, China's ancient scientific and technological achievements are far more than that. They embody the wisdom of the ancients and show their great creativity. Even now, they have influenced and changed the world.