Good and bad, benefits and harms of all things in the world often go hand in hand, so in real life, there are various dangers and poisons that we need to avoid. In order to help everyone understand and identify these poisons, this book focuses on and collects a wide variety of poisons and related knowledge from nine aspects: clothing, food, housing, transportation, use, environment, spirit, animals, and plants, and carefully selects the most common hazards and the most practical coping methods.
