Analysis:

The true origin of kites is now impossible to prove. Some folklorists believe that the ancients invented kites mainly to miss the sophisticated relatives and friends, so when the death gate of Tomb-Sweeping Day was briefly opened, they pinned their sympathy on kites and gave them to the dead relatives and friends.

Kites were called "kites" in ancient times and "kites" in the north. Most people think that kites originated in China and then spread all over the world. This is a traditional folk handicraft. In fact, the earliest kites in China were made of wood. During the Spring and Autumn Period and the Warring States Period, Mo Zhai (478-392 BC), a philosopher of the Eastern Zhou Dynasty, flew into the sky with a wooden kite for three years. Mozi was in Lushan (now Weifang, Shandong). "It took three years to build a stork, and it failed in one day." . This means that Mozi has been researching and trial-producing for three years, and finally made a wooden bird out of wood, but it broke down after only one day's flight. This "wooden kite" made by Mozi is the earliest kite in China and the earliest kite in the world. (about 300 BC), 2400 years ago.

It was not until Cai Lun invented papermaking in the Eastern Han Dynasty that people began to make kites out of paper, which is called "paper kites". Therefore, it can be inferred that China kites have a history of more than 2,000 years.

Mozi passed on his kite-making career to his students' open class (also called Luban). Lu Wen said that Lu Ban made kites out of bamboo according to Mo Zhai's ideal and design. Lu Ban split the bamboo, cut it into smooth slices, roasted it with fire, made it look like a magpie, and flew in the air for three days. The book "Hongshu" says, "The public transport team made wooden kites to see Song Cheng".

At first, kites were usually used as military tools, as a means of triangulation signals, sky wind direction measurement and communication. Just like in the Spring and Autumn Period, Lu Ban made a wooden kite to see Song Cheng.

In BC 190, Chu and Han contended, and Han and Han Xin attacked Weiyang Palace to measure the distance under the tunnel with kites. In the Battle of Gaixia, Xiang Yu's army was besieged by Liu Bang's army. Han Xin sent people to make kites out of cowhide, install bamboo flutes, play against the wind (it is said that Sean played the flute with a kite), and sing Chu songs, which distracted the morale of the Chu army. This is the story of the idiom "Embattled".

There are also records about kites in the official history, which are earlier than the Five Dynasties. One of them is the chaos in the background of the Southern Dynasties. Liang Wudi was besieged by the waiting scenery and the city walls were surrounded. He used to fly kites for help. According to the 80th volume of Biography of Southern History and Later Beijing, in the third year of the Qing Dynasty (A.D. 549), there was chaos in later Beijing. The rebel army besieged Liang Wudi in Duliang Jianye (now Nanjing), and was cut off from inside and outside. Someone suggested making a paper crow and tying the imperial edict to it. At that time, the prince's suicide note was thrown outside Taijitang by the northwest wind for help, but it was a rebel. This is the story of Jane Wen's unfortunate failure to fly a kite for help.

According to legend, in the 5th century BC, the Greek Alkell Das invented the kite, but it was later lost. It was not until13rd century that the Italian Kyle Poirot returned to Europe from China that kites began to spread in the west.

According to other textual research, it spread to Korea in the tenth century, then to Japan, and to Europe in the thirteenth and fourteenth centuries.

There is also a story about flying kites in America. At that time, people thought that lightning and flash were the roar of religious gods and caused fear. Fran Green used kites to prove that lightning and flash are air discharges and invented the lightning rod.