Best answer:
Leech breeding bases are all over the country, such as Hunan Wide-body Golden Leech Breeding Base, Anhui Bozhou Leech Breeding Demonstration Base, Chizhou Pailou Lihong Leech Breeding Professional Cooperative, Yulin Jinyinlong Leech Farm, Mengcheng Zhongxing Breeding Professional Cooperative and so on. The layout of the breeding base should be reasonable, including not only bank slopes, islands and beaches, but also shallow water areas and deep water areas, which is beneficial to the growth of leeches.