What was Niu Geng like in the Spring and Autumn Period and the Warring States Period? It was the exact time when two cows pulled the plough.

Two cows: traditional farming techniques. "Two cows carry the burden" is a unique farming method in Nanzhao period, also known as "two cows and three husbands". According to Records of Eating Goods in Hanshu, two cows and three people were engaged in "combined plough" farming. In the cave of the Northern Wei Dynasty in the Thousand-Buddha Cave in Dunhuang, there were murals of two cows plowing the land with pole. In Schumann, there is a scene in which two cows were carried in Yunnan in the Tang Dynasty.

Cattle-pulling plough: Short-axis cattle-pulling plough appeared in the Eastern Han Dynasty, which is flexible in operation and convenient for plowing on small farmland. The emergence of this short-axis one-ox plough is combined with the increase of share.

Changes of agricultural production tools during the Spring and Autumn Period and the Warring States Period;

At present, archaeologists believe that China began to use iron no later than the 6th century BC, or even no later than the 7th century BC. In the literature, the earliest material can be found in Zuo Zhuan, which records that the State of Jin cast criminal law on a set of iron tripod in 5 13 BC. Weapons, farm tools and utensils unearthed in tombs during the Warring States period were all made of iron. Many scholars believe that the development of iron smelting technology is likely to be a factor in the increase of agricultural output in these centuries. Other factors may be the increasing use of irrigation and drainage technology and chemical fertilizers, especially the planting of large areas of new land.

However, the effects of these and other technological improvements should not be overestimated. Throughout the Warring States period, iron was still relatively scarce. At that time, iron was often cast iron, not forged, so it was soft and brittle. Many tools are still made of bronze, stone, wood or shells. In addition, some important aspects of improving agricultural technology are particularly difficult to estimate and determine their time. Therefore, when the animal-drawn plow began to replace the far primitive but obviously long-term use of hoeing caused great controversy. According to extremely insufficient evidence, China scholars began to use tractor plows in 400 BC, until the first century or two, even before the Zhou Dynasty. The earliest clear material in the literature can only be traced back to the Han Dynasty (about 90 or 85 BC)-but this material indicates a fairly long period of early development.

The above content comes from Baidu Encyclopedia, the wrangling of Niu Er, the Eastern Han Dynasty, the Spring and Autumn Period and the Warring States Period.