The chinese dollar, the medical name su, is a commonly used chinese medicine. 1. Both chinese earthworms and worms prefer to live in dark, damp, corrosive, slightly alkaline estranged soil, entering the shallow soil during the day, moving out at night, searching for food or mating; chinese earthworms have the habit of eating eggs and killing each other when they are hungry; temperatures fall before and after winter, they begin to hibernate, and chinese earthnuts rise winters in the dark and at a depth of 5 centimetres from the ground, and then go out to eat. Ii. The reproduction is a spawning animal, which begins to lay some seven days after the female mating and completes a full generation from 1. 5 to 2 years in china. Every 15 days from june to september, during the spawning season, eggs are taken once every 15 days. At 30°c ~ 32°c and 20% soil moisture, all the eggs are hatched for 40 to 60 days. If the insect grows at the age of six, the male/female ratio is 3°1 and the chinese earth dollar removes the excess males, while raising the child/mother pool. Iii. The construction of earthling ponds in china applies to larger-scale breeding of insects and insects over the age of five, the size of which varies according to the number of incubations, while the hatching of eggs and small-scale breeding are optional. In the cooling and cooling area of the shaded tree in the northward direction of the country, the chinese earth dollar digs a pit of 1 metre deep, 2 metres long and 1. 5 metres wide, and lays the ground at the bottom of the pit. The chinese earth dollar builds the ground at 1 metre high with bricks, sews concrete on the inside, sews concrete on the inside side, covers the ponds with active doors, 40-chamber airholes with a grid on each end of 15 centimetres, seals on the walls of the chinese earth and lays 20 centimetres thick on the bottom of the pond, and sets up equipment for feeding and water so that the insect can be dropped. Iv. Livestock management, which consists of earthworms, crickets, platinums and various animal lowers, etc., and plant feed, which consists of mackerel, rice scabs, cakes, dust, tofu slag, maize, shredded rice and green leaves, bouquet leaves, pumpkin flowers, saloon leaves, melon leaves, melon fruit, etc. 2. The water supply has been provided by setting up small water basins in the rearing pool for the summer and regularly pouring water into the pool, which should also be avoided during hibernation in order to dry for long periods of time, and which should be kept humid during the autumn season of the valour during the feeding of semi-dry wet material。