Bamboo shoot is a small nest for the pupa, which in fact is a bamboo moth that gnaw away the bamboo tube very soon, leaving only a thin layer of wall, of course the bamboo shoot die gradually.

• 竹笋就是竹虫蛹的小巢，实际上乃是竹笋的蛀虫，很快便将竹管蛀空，只剩下一层薄薄的管壁，而笋尖也日渐枯死。