What are the other inventions in China besides the Four Great Inventions?

1. Geodesy

Geodesy is an heirloom masterpiece created by Zhang Heng, a Chinese scientist from the Eastern Han Dynasty. Zhang Heng lived during the Eastern Han Dynasty, when earthquakes were more frequent. Zhang Heng has a lot of personal experience of earthquakes, in order to grasp the dynamics of the national earthquake, he after years of research, and finally in the first year of Yangjia (132 A.D.) invented the Waiting Wind Geodesic Instrument, which is also the world's first geodesic instrument.

The Geodesic Instrument has eight directions, each with a dragon head with a dragon pearl in its mouth, and a toad at the bottom of each dragon head to correspond with it. If an earthquake occurs in any direction, the dragon beads contained in the mouth of the dragon will fall into the mouth of the toad, and the direction of the earthquake can be measured.

2, iron plow

Iron plows first appeared in China during the Spring and Autumn and Warring States periods. Hebei Yixian Yan Xiadu site and Henan Hui County have unearthed iron plowshare of the Warring States period.

The invention of the iron plowshare is a remarkable achievement, which marks a new period in the development of human society and a new stage in the struggle to transform nature. Iron plows, the agricultural tools of the Han Dynasty, already had plow walls that could play a role in turning and breaking up the soil. When the iron plow was introduced to the Netherlands in the 17th century, it triggered the agricultural revolution in Europe.

3, sow

Sow is an ancient agricultural tool for sowing. Drawn by animals, behind someone holding, can be completed at the same time to open the furrow and seed two work. One time to plant a row or, more than one, the traditional up to 5 rows. Its farming tools for the predecessor of the current planter, sow seeds with a columbine.

It is also called "耩地"。 Sowers are also called "columbarium plows". According to the East Han Cui Shi "political theory" records, sow plow is the Western Han Emperor Wu Di when the search for corn lieutenant Zhao over the invention of its use and effectiveness is: "three plow **** a cow, a person will be, under the seed to pull the sow, are taken to prepare for the day, a hectare of seed." This columbine plow is now the three-legged columbine still in use in the northern countryside.

4, keel waterwheel?

The keel waterwheel is also known as the "overturned car", "treadmill", "waterwheel", provincial name "keel". The provincial name "keel". Han historical irrigation farming tools, popular in most parts of China. This water lifting facility has a long history. Because it is shaped like a dragon bone, so the name "dragon bone waterwheel".

The structure is a wooden board as a trough, the end is immersed in the flow of water, there is a small wheel axle a. The other end has a small wheel axle, fixed. The other end has a small wheel shaft, fixed to the embankment on the wooden frame. When used to step on the crutch wood, so that the big wheel axis rotation, driven by the groove of the board leaves scraping the water upstream, pouring irrigation in the field of higher terrain.

After generations, there is the use of running water as the driving force of the water turning keel car, the use of oxen to make the gear rotation of the oxen pulling the car. As well as the use of wind power to turn the wind turning cart. Guangdong and other places with hand-cranked lighter, applied to the field ditch, called "hand-cranked pulling car".

5, Lingqu?

Spirit canal, the ancient name of the Qin chiseled canal, zero canal, steep river, Xing'an Canal, Xianggui Canal, is a great project created by the ancient Chinese working people. Located in Xing'an County, Guangxi Zhuang Autonomous Region, it was chiseled and opened to navigation in 214 BC.

The Lingqu River flows from east to west, connecting the Ocean River (the source of the Xiangjiang River, which flows from south to north) in the east of Xing'an County and the Daxue River (the source of the Li River, which flows from north to south) in the west of Xing'an County, and it is one of the world's oldest canals, and it has the reputation of being the "pearl of the world's ancient water conservancy architecture".

Baidu Encyclopedia - Geodesic Instrument

Baidu Encyclopedia - Iron Plow

Baidu Encyclopedia - Sower

Baidu Encyclopedia - Dragon Bone Waterwheel

Baidu Encyclopedia - Spirit Nullah