There is a saying in Japanese society: "Take care of yourself and don't cause trouble to society." Everyone has such a belief that the quality of citizens in the whole society is very high. Tear off the trademark before throwing away the bottle. If Japanese residents can't find the trash can on the street for a while, they will take the garbage away and put it in their own trash can at home. A lady accompanied us, and one of us told her, "Miss, you have two hairs on you." "I'm sorry." As she spoke, she took off her hair, wrapped it in a napkin and put it in her pocket. When eating in the canteen, everyone will clear the table by themselves after eating, a few drops of soup spilled on the table will be wiped off with paper towels, and the cups, plates, dishes and chopsticks will be collected in a centralized storage place. Of course, there are smokers, but no one will throw ash and cigarette butts. When smoking in the street, they will bring a portable ashtray (I bought two portable ashtrays from Japan specially). People who walk their dogs in public places must carry garbage bags with them. When a dog poops, it should be carefully cleaned and taken away in a garbage bag, and then the ground should be wiped with a paper towel. I think human civilization is closely related to garbage disposal. Garbage disposal can be divided into four stages of civilization: the first stage is "spitting stage", because spitting will throw garbage everywhere; The second stage is the "centralized stacking stage". Beijing is now at this stage, and garbage is concentrated and not littered; The third stage is "classified treatment stage". In Japan, garbage is divided into three categories: combustible, nonflammable and cans. Personally, I think that most cities in China, including Beijing, have not really reached this stage; The fourth stage is the "refined management stage", that is, more than three kinds of distribution. For example, people usually throw the bottles into the trash can after drinking coke, while the Japanese will tear off the trademark paper on the coke bottles, throw it into the trash can of combustible materials, and then stuff the bottles into the trash can of bottling cans (because workers also need to tear off the trademark paper after recycling bottles and cans). Similarly, Japanese people often wash the soy sauce bottles used up at home with clean water and then put them in the trash can, because they need to be cleaned after recycling. For empty bottles made in Mu Si, the Japanese will punch a hole in the bottle body before throwing it into the trash can to avoid potential safety hazards. By the way, there are several large garbage disposal plants in Tokyo, Japan. Of course, there are tall chimneys, but chimneys don't smoke. There must be a stadium near the garbage disposal plant. The waste heat generated by garbage incineration can keep the water temperature of the stadium swimming pool, and also help people understand their relationship with garbage and the relationship between people and the environment during exercise.