This is the earth turtle [tǔ biē] also known as the earth yuan, earth baa baa, "dustpan bug", and the guanyin bug (Southwest China).
The earthworm is a medicinal insect, the dried female body of which is a traditional animal medicine. Materia Medica Compendium, Insect Division, Volume 41, Eupolyphaga. Name of the medicine. This is an alternative name for Eupolyphaga, see "Eupolyphaga". It is the dried female body of Eupolyphaga sinensis Walker or Stleophaga plancyi (Boleny) of the cockroach family Eupolyphaga. After catching, it is scalded to death in boiling water and dried in the sun or dried.