Do you know what a wheelbarrow was before?The first was a wheelbarrow, mainly from farmers pushing vegetables.It used to be called "the chicken bus", "the second hand", "the earth car".There are distributions in many parts of the country.Before modern means of transportation was popularized, it was a light transport and manned vehicle, especially in the north, almost as important as the donkey.Since the car is only on a single wheel, it doesn't have to choose the width of the road, so narrow roads, roadways, ridges and wooden Bridges can pass through.This is very suitable for the production and transportation of the tea area, and because it is a single wheel, the car passes by, the marks left on the ground are a straight line or curve, so it is also known as the "line car".The unicycle is marked with only one wheel.Due to the laws of gravity, terribly upsetting, oddly, ancient Chinese use it to load and manned, trek, steady light, therefore, its creators and the first driver must be courageous and knowledgeable is a mechanical engineer.As for the car of the wheelbarrow, its length, its slant, the height of the support rod, the upright and the wheel cover of the elliptic, almost everywhere and vary from person to person.The invention of the unicycle usually goes back to China, though there is a lot of controversy.The earliest description of the Chinese unicycle was found in the two centuries of murals and brick tombs in the han dynasty.In a tomb in chengdu, sichuan province, in an age of 118 years, a man with a wheelbarrow was found.A stone relief sculpture of 150 years was found in the palace in shenyang, sichuan province, and people with wheelbarrows were also engraved.In the 24th filial piety, dong yong, a filial son, used a wheelbarrow named "deer car" to carry his father around the world, and described the 147-year murals in the temple of wuliang in shandong province.But there is more evidence to date back to the 1st and 1st century BC.In the fifth century, the book refers to the story of an idiom that happened in the first 30 years. The story of bao xuan's wife and bao xuan drove the deer to return to the countryside.After occurred in 20 years, against usurpers follwed (45 years - 23 years) before the red eyebrow uprising, zhao Xi disguise himself and put his wife on his deer car, claiming that his wife is very uncomfortable and successful by thugs inquiries, so as to avoid danger.Who was the first creator of the wheelbarrow?People immediately think of The Three Kingdoms as zhuge liang.The Three Kingdoms did write down the words "bovine bovine", which is a unicycle, according to an examination.In the song dynasty, the song "ji yuan" also attributed to zhuge liang.However, according to historical records, the famous iron and steel technician of shu yuan used to write about his work.So before zhuge liang, there may be some skilled craftsmen, can cause the unicycle.According to han dynasty pictures and some written records, the invention of the wheelbarrow can be promoted to the later years of western han dynasty, or "deer car" and "wheel cart".After The Three Kingdoms, the unicycle was widely used.Song yingxing describes and describes the driving law of the southern and northern unicycle in the "heavenly work of the zhou-zhou-zhou-zhou-zhou-zhou-zhou-zhou-zhou-zhou-zhou-zhou-zhouzhou".Southern unicycle, only to see one person's strength.