The diagram presents about silkworm's metamorphosis and how to create silk cloth. Overall, the production of silk is a part of silkworm's life cycle when they transform to be a cocoon.
The stage of silkworm life include eggs, silkworm larva, larva in silk thread, cocoon, and a young silkworm. The process to be a silkworms is began from eggs which is produced from elderly silkworm. After 10 days, those are becoming larva which is mulberry leaves as foods and place of living. Next stage is larvae transformed be a larvae in silk thread for four until six weeks. After that those is becoming cocoons and finally to be a young silkworms after 16 days.
The stage of silk cloth production is began when silkworm as cocoon. That process are select, boil, twist, and wave. Firstly, cocoon is selected which is boiled in the pan. Then, those is unwind throughout 300-900 metres which is twisted in the dye. Silk thread is interweave by weaver. Finally, silk cloth is produced and which is sealed in the store.
Given are two diagrams which tell us about what a silkworm's life is like and how the silk cloth is produced.
According to the first diagram, the life of a silkworm starts from the eggs produced by the adults moths on the mulberry leaves. After a period of 10 days, the eggs become silkworms larvae who eat the leaves for further growth. About 4 to 6 weeks later, the larvae package themselves by providing silk threads around their bodies, and they will stay in this self-made cocoon for about 3 to 8 days, waiting for the final transition until, 16 days later, the final form of silkworm-moths-break off the cocoons finally. When the moths grow up and produce eggs on the mulberry leaves as their parents did, a new cycle of life begins again.
The procedure of the silk cloth's production is demonstrated clearly in the second picture as 5 stages. In the first stage, the worker select the cocoons produced by the silkworm, and then boil them in the water during the next stage. The third step is to unwind the cocoons, and each cocoon can be finally unwounded to a single thread whose length can vary from 300 meters to 900 meters. After that, these threads are twisted together as one strand and dyed in the fourth stage followed by weaving stage, where the silk cloth is finally produced and dyed again.
In general, the two pictures introduce us the lifecycle of a silkworm and the production of silk cloth.