What are the four evils in ancient times?

Ma Su's Nan Ke Zi in Yuan Dynasty: I dreamed of traveling to the countryside, and the skeleton called me. The sound of sorrow and joy is sad. I hate the past. I am full of wine and wine. The four evils are physical pain, but the human heart is not gray. Make it beyond redemption. If you regret it, go and learn from the gods.

Wang Zhe's Xijiang Moon in Yuan Dynasty: It's a pity that the world is fascinated by it. Everyone yearns for a belt like a chicken and is very confused. I shook my head alone, but I'd rather be alone. Coarse cloth feeds on pale yellow horseshoe crabs. Keep the fairy Ji Ji.

The four evils here refer to debauchery and wealth.

"Four pests" refer to mosquitoes, flies, mice and cockroaches.

Mosquitoes can spread diseases such as malaria, Japanese encephalitis, filariasis, dengue fever and yellow fever.

2. Flies carry countless bacteria and viruses, and there are dozens of diseases that can be transmitted, among which dysentery, hepatitis A, acute gastroenteritis, food poisoning, trachoma, poliomyelitis, ascaris, cholera and so on are common.

3. Rats not only steal food and destroy buildings and farmland, but also spread plague, epidemic hemorrhagic fever and leptospirosis.

4. Cockroaches not only bite physical objects, destroy raw materials and pollute food, but also spread diseases such as dysentery, typhoid fever, polio, adenovirus and viral hepatitis. In addition, they will make food moldy and produce carcinogenic aflatoxin.