One of the ancient secret weapons. When it is used to hide in the sleeve, a press the machine bracket, the arrow is issued, so the name of the sleeve arrow. The construction of a Hidden Arrow includes a quiver and an arrow.

The quiver is a metal cylinder with a straight diameter of 2.7 cm and a length of 18 cm, with a perforation on the lid and a distance of 3.3 cm from the cover

"Butterfly wings

The cylinder is equipped with a spring, and its lower end is connected to the tail cover, and a round iron sheet is connected on it; the arrow is a bamboo pole and iron head, and the arrow is about 15 centimeters long. Sleeve arrows are issued not by hand strength but by mechanical power. Sleeve arrows can be divided into single tube, three-star, plum blossom, and seven evil. Single-barreled Hidden Arrows can only fire one arrow at a time. The outer corridor of the cylinder is cast of copper and iron, about eight inches long, about eight minutes in diameter, and the top of the cylinder is covered and connected to the barrel body can not be opened and closed. There is a small hole in the center of the cover, which is where the arrows are loaded. An inch next to the cover, there is a piece of steel movable butterfly wings, which is used to control the launch of arrows. When the arrow is inserted into the barrel, the butterfly wings are closed, and the arrow is jammed. If the butterfly wings are opened, the arrow will shoot immediately. There is a spring made of pure steel wire coil in the cylinder, the length is equal to the length of the cylinder, and the diameter is slightly smaller than the diameter of the cylinder. The top of the spring is attached to a round iron plate, and the size of the cylinder coincides with the inner edge of the cylinder. There is a cover at the end of the spring, slightly larger than the barrel body, which is fastened with a screw to the barrel body. Because at each rotation of the spring, the distance between the two steel wires is about one minute, so the elastic force is very large. The shaft of the arrow is made of bamboo, about seven inches long, as thin as chopsticks, and must not be knotted. The rod is equipped with a prismatic iron arrow. In the upper part of the arrow shaft, there is a depression to facilitate the lock of the butterfly wings. In addition, prepare another arrow insert, and store twelve arrows per insert. A hidden arrow hidden in your sleeve. It can be concealed in a special arrow box in the sleeve, the shaft is short and light, and the arrow is heavier. When fired, it can kill enemies within 30 steps. In addition to being used in white-knuckle combat between the two armies, it can also be used as a self-defense weapon for darts, boxers, and martial artists. There are two types of Hidden Arrows: Single Hidden Arrows and Plum Hidden Arrows. Single-shot Hidden Arrows, which can only fire one arrow at a time. The arrow is 8 inches long, the circumference is 8 minutes, the top of the barrel has a cover, connected to the barrel body, and the center of the cover leaves a / hole, out of this loaded arrow. There is a moving butterfly piece at an inch next to the tube cover, which is dedicated to opening and closing. The plating bottom is equipped with a spring, there is a round iron plate on the spring, after the arrow is loaded, the spring is under the doctor, and the arrow is closed in the barrel with a butterfly plate, when fired, the butterfly piece is opened, the spring springs up, and the arrow in the barrel can bounce out of the elbow. The arrow is 7 inches long, l inches long, and there are 12 arrows per simple outfit. Plum Sleeve Arrows, 6 arrows each time, can be fired continuously. The diameter of the arrow is about 1.2-1.5 inches, and the single-shot sleeve arrow is slightly thicker. There are 6 small tubes inside the tube. 1 branch in the middle, 5 mugwort circumferentially, shaped like plum petals. There is a butterfly juice on each cylinder to control the fangguan, and there is an iron ring behind the lid of the box, after firing an arrow, the cylinder must be split and rotated at an angle one by one, so that it can be shot out continuously.