Spring silkworm symbolizes hardworking, dedicated and intelligent people, and is a persistent, loyal and silent spirit. Because it eats mulberry leaves and spits silk, it is used by people to spin and become silk closely related to people's lives. Actually, it's very similar to cattle. It works hard, in other words, it is people's friend. Because of these qualities, people like silkworms and like to use silkworms as metaphors for all kinds of beautiful things.
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The significance of spring silkworm:
The image of candlelight represents the quality of burning life and bringing light to others. The image of spring silkworm represents the quality of conscientious work just before the death of life, so candlelight and spring silkworm represent the precious spirit of selfless dedication.
Now there are people like Candlelight and Silkworm in all walks of life. They have been sticking to their posts, silently dedicating their youth and talents, never caring about personal gains and losses, and never asking for returns. It is also a model of this era.
Baidu encyclopedia-spring silkworm
People's Network-People's Daily People's Forum: Understanding the Meaning of "Green Leaf Spirit"