The head is olive green, with a solitary golden yellow stripe along the side of the head. The front and back of the plastron are connected by ligaments, and the carapace can be closed by pointing upward, so it is called a turtle. There are 5 vertebral scutes, 4 pairs of costal scutes, and 12 pairs of marginal scutes. The edge of each scute is darker in color, the plastron is brown-black, and the ventral surface of the outer marginal scute and the outer lower edge of the carapace and the skin are beige. The back of the limbs is brown-black, and the ventral surface is light in color. There is a yellow vertical stripe on the back of the tail. In my country, it is only distributed in a few provinces such as Henan, Hubei, Anhui, Jiangxi, Jiangsu, Zhejiang, Hunan, Fujian, and Taiwan. Taiwan, China, and the Ryukyu Islands are relatively large in distribution. Due to over-purchasing, turtle resources have declined rapidly. In recent years, in order to make huge profits, a few people have purchased all turtles regardless of their size and shipped them out at high prices, resulting in the endangered yellow-margined turtle. The resource reserves of yellow-margined closed-shell turtles are declining year by year and will be on the verge of extinction. The yellow-margined turtle is a key protected wild animal in Anhui and Zhejiang provinces. It is very necessary to establish the yellow-margined turtle nature reserve. It is very necessary to carry out special protection, research and rational development and utilization of the yellow-margined turtle. The yellow-margined turtle is a very ancient animal that is known as a "living fossil". Yellow-margined turtles mainly live in moist areas near water such as forest edges, rivers, and lakes. They often inhabit fallen trees, rotting forests, rock crevices, deep caves and under fallen leaves. They stay up during the day and emerge at night. They feed on small fish, shrimps, worms, snails and budding plants. They begin to estrus and mate from late May to September every year. The middle period is the spawning period. They lay eggs 3 to 4 times a year, with 2 to 4 eggs each time. When the temperature drops to 10°C, they enter hibernation. Yellow-margined turtle was a commonly used medicinal material in ancient times and has been recorded in many ancient books, such as: Shegui ("Erya"), Linggui (note by Guo Pu in "Erya"), Yigui ("Baopuzi") ), duck turtle (Tao Hongjing), snake-eating turtle ("Tang Materia Medica"), snake-eating turtle ("Therapeutic Materia Medica"). The three-line closed-shell turtle is also called the money turtle, with a body length of 20-30 cm and a weight of 2-2.5 kg. . Its shell is divided into two parts: the dorsal carapace and the plastron. The plastron is composed of four symmetrical pairs of bone plates on the left and right sides and a bone plate in the middle. However, it is different from other turtles in that it has no bone bridge. In life, the back and plastrons are not connected by bone sutures like other turtles, but by ligaments like hinges. The dorsal carapace and plastron are connected to the body by nail bridges on both sides to form a box shape. In addition, the part of its plastron in front of the thoracic shield can be closed freely due to the movable ligaments. The lower edge opening of the carapace roughly matches the width of the plastron. The carapace is like a box lid with a convex back. On top of the flat-bottomed plastron like the bottom of a box, its head, tail and limbs can be retracted into the middle of the two armors, and the front and rear edges of the plastron can be closed upward, so that the head, tail and limbs are in the same position. The inner body is not exposed at all, so it is called a closed-shell turtle. After death, the ligaments rot, the hinges are broken, and the connection is lost. The back and plastron will separate by themselves. This is more common among fossils of closed-shell turtles. phenomenon, so some people call it the "broken plate turtle". The three-line closed-shell turtle is also called the golden-headed turtle, the red-bellied turtle, the golden turtle, etc. The back of the head is yellow-gray, smooth and scaleless, from the snout to the back of the eyes. Each has a black eyebrow-like wide stripe, forming an oval yellow spot with a black border; the neck is olive green with black stripes; the carapace is tan, about 17 cm long and 13 cm wide, although it is raised upward but not It is tall, with three black longitudinal ribs on it; the plastron is black, with movable ligaments, but the front and rear edges are incomplete when closed upward; the back of the front and rear limbs is olive, and the ventral surface is black, mixed with yellow spots, and the toes are webbed. The parts where the limbs connect to the body are orange-red; the tail is long and tapered.