Cordyceps is a rare and precious herb that is essentially a parasitic form of a fungus of the genus Codyceps on the larvae of some butterflies.
The name “Cordycephalus” comes from the actual observation that in winter, fungal spores of the genus Cordyceps infect the larvae of the worm, the fungus sucks up nutrients and kills the host, the essence Its still a larva, so it’s called “Dong Chong”. In the summer when the weather is warmer, the fungus will grow up high and the stem is still attached to the young worm, now in the form of herbaceous, so it is called “Ha Thao”.