1. Cordyceps naqu's eyes are brownish red or brown, not protruding, flat but not protruding.

2. The grass head of Cordyceps Naqu has obvious brown-yellow gradient color, from deep to yellow and then to deep grass head, which is thin and naturally curved.

3. The neck of Cordyceps Naqu has obvious gradient color, and light yellow and light white appear alternately. There are three pairs of degenerated feet near the worm's head, which are not obvious. There are four pairs of feet in the abdomen and a pair of small feet at the tail of the body.

4. The aroma of Cordyceps Naqu is very rich, similar to the taste of ghee. When chewing, there is a strong bacterial smell in the mouth, which is very fragrant and not awkward.