1. Fold the left side of two pieces of paper to the center line and the right side to the center line.

2. Next, fold the upper and lower corners of the two pieces of colored paper in different directions, and fold the two pieces of paper again in the same way.

3. Yellow is on the top and orange is on the bottom. The orange corner folds down into the yellow corner, and the yellow corner folds into the orange corner.

Darts/kloc-rose in Britain in the 0/5th century and became a necessary activity for people to relax in bars in the early 20th century. In 1930s, darts became more and more professional, and professional associations, professional competitions and a large number of professional masters appeared.

In the application of self-defense in ancient China, China has three kinds of darts.

The first one is willow-shaped, and his technique is roughly the same as flying knife, with 90-degree direct flight, 180-degree spiral flight, 360-degree spiral flight and so on.

The second kind is a dart with ears behind it, also called an ear dart.

The third kind of China is called meteor dart, cross dart, four-star dart, square dart and blood moon dart, which is the Japanese shuriken Ninja dart.

According to records, the soldiers of the Roman Legion were sent to the distant British island by the Roman emperor, and the rainy British climate made it inconvenient for them to stay outdoors for a long time. So, in the shed, they shot arrows at targets made of oak cross-sections, which gradually developed into modern darts.

In other words, darts evolved from the 10 inch throwing weapon used by British archers in melee.

The third statement is related to specific historical figures. King henry vii of England is physically weak. Considering that hunting is dangerous and hard, he decided not to hunt any more. He made a short-handled dart gun and threw it at the cross section of the oak tree to achieve the purpose of fitness. Soon, the court ministers also fell in love with this sport and gradually spread to the people.