This theory is represented by Biography of Zu Chongzhi in Nanqi, Guang Ji of Taiping and Ci Yuan. Its main contents are as follows: During the Three Kingdoms period, it was not uncommon to use the gear principle to manufacture machinery. In the Eastern Han Dynasty, Bilan rollover was an instrument that used gears to rotate to draw water. During the Three Kingdoms period, South Korea and Japan also made water rafts, which were irrigated by water wheels driven by water.
Extended data:
The wooden ox and flowing horse in the Romance of the Three Kingdoms has always been a mystery, and it has also fascinated countless people. At that time, the production conditions were poor, far less than modern ones, but the structure of "cow Liu Ma" seemed simple and feasible, which was also in line with the situation at that time.
If Cow Liu Ma had been written wonderfully at that time, we might have abandoned it as a myth, but just because the book was written in line with the situation at that time, we can't help but doubt that there might really be A Mu Cow Liu Ma at that time. However, with a long history, the drama of the novel makes us somewhat helpless.
If the "wooden ox and flowing horse" can really walk without eating or drinking as described in the book, it obviously does not conform to the law of conservation of energy in modern science. Because if "cow Liu Ma" wants to walk, it will definitely consume energy. At that time, there must be no energy substances such as oil and natural gas. It doesn't eat or drink. Where did it get its energy? This is a question worth thinking about.
If we want to create a wooden cow like the one described in the novel, we must abandon the law of conservation of energy. Similarly, creating a "wooden cow and a flowing horse" will certainly break the law of "conservation of energy" that has influenced our generations. This must be a story that attracts worldwide attention.
There are countless mysteries in history that need us to solve. This may just be a fictional object, but no one can deny its existence until the mystery is solved.