Lu says that silkworms have been cultivated for thousands of years and are no longer capable of surviving in the wild. While other insects slaughter one another if cultivated, silkworms do not. In fact, you can have upwards of 10,000 crammed in together and they'll all get along.
苗栗農改場課長盧美君指出，家蠶已被馴化幾千年，無法在野外生存，必須靠人飼養；其他昆蟲會自相殘殺，無法養在一起，但蠶寶寶不會，上萬隻擠在一起都相安無事。