The given diagrams illustrate the various stages that constitute the life cycle of a silkworm and how silk cocoons are employed to produce silk cloth.
As can be inferred from the diagrams, it is immediately evident that the development of the silkworm consists of four main steps, from egg to maturity, while the production of silk cloth can be broken down into five major stages, commencing with the selection of silk cocoons, subsequently going through several processing stages, and finally culminating with the weaving and dyeing of silk thread.
The life cycle of the silkworm begins with the female silkworm laying eggs on a leaf. It then takes 10 days for the eggs to hatch into larvae, which feed on mulberry leaves. After the hatching stage, from 4 to 6 weeks, the larvae begin to make silk thread before totally covering themselves in their own cocoons in the following 3 to 8 days. These larvae then spend 16 days living in the cocoon and experience a dramatic physical transformation during this period. More specifically, they grow quickly in size and develop wings, becoming moths, and the life cycle starts again.
Turning to the process of producing silk cloth, it begins with silk cocoons being selected before they are boiled at a high temperature with water. These boiled cocoons are then unwound into various threads, which measure between 300 to 900 meters long. Finally, these threads are either twisted and dyed or woven first and dyed subsequently.