At this time, you should prepare a small box, spread paper in the box, pick some fresh mulberry leaves (wet mulberry leaves should be dried with cloth, otherwise the silkworm will have diarrhea), put them in the small box, and then put the young silkworm on it, so that the young silkworm can eat mulberry leaves every day when he is hungry. After about a week, the young silkworm will grow up slowly, peel off its skin once, and become a white "princess" the second time and the third time. Later, it was as thick as a little finger. About three or four times when the silkworm is translucent and doesn't eat. It's time for the silkworm to cocoon. It will spit out some white silk. At this time, you should pay attention. It's better to put it in another box, because nothing will be put in it. At this time, it will not eat. In this way, the silkworm will choose any one of the four corners of the box, spin silk and cocoon until it is finished. You see that you are just a white oval cocoon. Don't touch it at this time. Just close the box, wait about half a month, and then open the box, and a silkworm moth will fly out of it. This is the time when it gives birth. You can put some paper in the box, and the silkworm moth will lay eggs on the paper. Silkworm moths will fly away (that is, die) after giving birth. It's about rotation. Prepare some hay and place it vertically and horizontally, and put silkworms on it. When the silkworm begins to spin silk, it will stop eating and excrete all the feces in its body. The white part of the body will become translucent and glossy milky yellow (6 ~ 12h). At this time, you just need to tie the straw into a messy fork, and it will climb up and cocoon itself. It doesn't matter if you don't go there to pick it after three days of cocoon formation.