"Dead but not stiff" is preceded by "a hundred-legged worm", which means that even if you die, you will not be stiff and it is not easy to destroy bad forces. My husband's spring, when it dries up, will flow away, while the roots will rot and the leaves will wither. The branches will shade the roots, and the fallen people will be lonely. Therefore, the phrase "a millipede will die if it doesn't freeze" can be compared with those who help it.

The whole sentence of "a hundred-footed insect dies without being stiff" should mean that a hundred-footed insect will not fall down even if it dies. Metaphor means that although someone or a group has lost power, they still have some momentum and energy. The part of speech of millipede is derogatory, and millipede refers to centipede. Scolopes, scorpions, snakes and other things that are poisonous or have a bad image usually imply evil and insidious things, such as the hearts of snakes and scorpions.