A Chinese legend says that the first silk thread was created when a cocoon accidentally fell into the hot tea of Si-Ling-Chi, a Chinese Empress and the wife of Emperor Huang-ti. she managed to come up with the way of using silk in weaving.
She found that the threads of the cocoon were uncoiling and decided later to experiment with silkworms. Silk turned out to be very important to the economy of China and people kept its secret for thousands of years and the Great Wall of China helped them to do so.
Starting with the year 850, magnetized needles were commonly used as navigational devices on ships.
Zheng He from the Yunnan province in China was the first to use the compass as a navigational tool.
Just like the first noodles, this invention has a long history, being created about 4,000 years ago.
It would be interesting to note that this material is made from the silkworm moth's cocoon, which is dropped into boiling water and then silk thread can be unwound.
In the period between 14 he managed to carry out seven ocean trips.
Historians say that the Arabs used pasta or noodle-like food for long trips in the fifth century.
With the help of advanced technologies, researchers were able to conclude that the wonder with all of its branches extend to a distance of 8,851.8 kilometers (5,500.3 miles).
It has been estimated that more than a million of workers died during the construction process and some of them were buried among the bricks of the wall.
The Silk Road helped the Chinese to trade their valuable silk fabric to other nations.
Japan was able to obtain the secrets of raising silkworms and silk manufacturing in the 3rd century.
During the Ming Dynasty (from 368 to 1644), people started using bricks in a lot of areas of the wall. The Great Wall extends from Shanhaiguan located in the east, to Lop Lake found in the west.