If the lungs inhale dust, it is definitely best to expel it intact. Generally speaking, when the lungs expel these impurities and pollutants, they are expelled by the method of phlegm, and these pollutants are easiest to expel when they are first inhaled, but if they are inhaled for a long time, or if they are exposed to the polluted environment for a long time, they will be deposited inside the cells, or on the basement membrane below the cells, so that the lung mucosa will show some color in the future. For example, people who have been smoking for a long time say that their lungs are dark, but this is actually caused by the soot deposited in the lungs. If you want to promote the discharge of phlegm, you need to often eat something that contains more water, preferably something that contains more mucus is able to help the lungs to discharge phlegm, for example, like silver fungus, fungus, or something that has a sticky soup, that is, pulling sticky things, like yams, water chestnuts, and generally like okra with mucus, and like loofah, in fact, these things can help the lungs to discharge phlegm. In meat there are some sinewy things or meat skin kind of things can also be, but because doing meat is easy to do heavy taste, so weaken the role of meat to drain phlegm, meat it if light taste, it is inside the protein and oil can help the lungs to recover, but also help it to resolve phlegm. But why do people think meat produces phlegm? It is because the taste of meat is too heavy, so if you want to help the lungs inside the inhalation of dust discharge, the appropriate increase in protein, and mucus, gelatinous things can help the lungs to drain phlegm.