1. Leech with black stripes in Henan. At present, there are Puyang, Zhumadian, Xinyang, Shangqiu, Jiaozuo, Zhoukou and Xinxiang in Henan.
2. Hirudo is a commonly used Chinese medicine, which has the functions of removing blood stasis, dredging channels and activating collaterals, and can be used to treat blood stasis, blood stasis, amenorrhea of women, dry blood tuberculosis, traumatic injury, red eyes and pain, clouds and so on.