Brother Wolf had nothing to say to Li Du. Although Li Du quickly lost his passion for searching wild edibles, he was still very serious about teaching.
"What I did just now is actually wrong. That's not the way to act if you want to live to a ripe old age. Please don't do what I did just now and just stuff whatever you can see inside your mouth. You should observe first. If there are locusts or worms on the branches and leaves, do not eat those directly. You have to wash them clean before eating. If there are worms on it, it shows that that plant is harmless. However, the worms might release some poisons…"
"Next, you should smell it. Cut a small part of the plant and place in under your nose to smell. If you can smell something like bitter almond or peach tree bark, it means there's poison, you can't eat those…"
