In BAIC, people may not understand Gao Changgong's name. However, speaking of his status as a warrior of Lanling, it is well known. In his spare time, he just tinkers with some gadgets. Because he usually loves to drink, he made a little man with a glass according to the appearance of the conference semifinals at that time. Every time I persuade someone to drink, the little man will automatically walk up to that person with a glass and bow down to pay a tribute, which is embarrassing and can't be refused. This toaster is the first robot recorded in the history of our country, but it's a pity that it's hard to get a glimpse of its true colors.
lunisolar calendar
The ancient calendar of China adopted the combination of Yin and Yang, that is, the cycle of the sun was taken as the year, the cycle of the moon as the month, and the leap month was used to coordinate the relationship between the year and the month. According to the position change of the sun in a year and the evolution order of the ground climate caused by it, the ancients divided the year into 24 segments and 12 months to reflect the four seasons, temperature and phenology.
The calendar of Xia Dynasty is the earliest calendar in China, and the month is determined according to the direction pointed by the Big Dipper in bucket handle. Xia Zhengxiao, preserved in Dali, is an important document about Li Xia and the earliest astronomical calendar work in China.
The astronomical calendar in China has a long history, and has undergone many reforms since the earliest written calendar-the seasonal calendar. According to statistics, there are more than 100 calendars used since ancient times. Among them, taichu calendar in the Western Han Dynasty is the first calendar handed down from ancient times in China with complete data. These calendars belong to three systems: lunar calendar, solar calendar and combined calendar of yin and yang.
Mo Jing
Mo Jing has a lot of physical knowledge, including the description of lever principle and buoyancy theory, as well as acoustic and optical records. About the relationship between light and shadow, pinhole imaging, etc. , written in a very systematic way, is called "Eight Light Articles of Mohist Classics" by modern scientists.
Bronze chariots and horses technology of terracotta warriors and horses of Qin Shihuang
The terracotta warriors and horses in the mausoleum of Qin Shihuang 2,200 years ago are now being developed and displayed. Due to technical reasons, the original colorful terracotta warriors and horses disappeared under oxidizing conditions. Qin Shihuang's bronze chariots and horses were composed of 3,500 parts, which took a lot of time and experience. Its craft is exquisite and complicated, and it is composed of 3500 parts through casting, inlaying, welding, snap connection and living hinge connection. The most amazing thing is his umbrella cover. The umbrellas of two bronze chariots and horses are tortoise shells.