1, in short, in summer, the worms lay eggs on the ground, and after hatching, the larvae drill into the soft soil. Under appropriate conditions, they are constantly eroded by a fungus spore in the soil, which takes the worm as food and grows in the worm.

2. The space in the host body is limited, and the growth of hyphae slowly feels limited. When summer comes, it breaks through the worm's head and grows out of the ground, looking like a grass. In this way, a cordyceps sinensis was formed.