Huang Jinbao's yellow silk is not dyed, but organic. It is natural that silkworm babies spit out yellow.

Silkworm is the larva of silkworm moth and the main source of silk raw materials, which plays an important role in human economic life and cultural history. Originated in northern China, the main food is mulberry leaves, and goose dishes can also be supplemented. Cocoon is made of continuous silk with a length of 300~900 meters (1000~3000 feet). Silkworms and pupae are edible and have therapeutic effects. Adult moths cannot fly. They are also called "silkworm moths". They are only used to spawn and reproduce, and die after spawning. Because of its long history and important economic value, silkworm genes have become an important research object of modern science. Silkworms can be divided into two categories: one is mountain silkworm, also called wild silkworm, which lives on wild leaves; Another kind of silkworm, also called silkworm, feeds on mulberry leaves.