1. The most common, cigarettes are lit, and the smoke enters the human body through the mouth and nose, the oral cavity, respiratory tract, and lungs; \x0d\ 2. Snuff, the tobacco is ground into very fine powder, and other substances and traditional Chinese medicine are added. Inhaled through the nasal cavity;\x0d\3. Chewing tobacco, specially made tobacco, put into the mouth and absorbed through the mouth;\x0d\4. E-cigarettes, the same as cigarettes;\x0d\5. Nicotine chewing gum, of course absorbed through the mouth; \x0d\ 6. Nicotine patch, absorbed through the skin. \x0d\\x0d\Explanation: \x0d\1. All methods are to compensate for nicotine; \x0d\2. The only purpose of compensating for nicotine is to relieve the inner emptiness (withdrawal symptoms). \x0d\3. Withdrawal symptoms are caused by smoking. Non-smokers do not have these withdrawal symptoms and do not need to smoke. \x0d\4. Smokers do not know that withdrawal symptoms are caused by smoking, but they know that smoking can relieve withdrawal symptoms, and regard this "relief" as "happiness". \x0d\5. Tolerance (understand my drug resistance) determines that the amount of cigarettes can only be gradually increased. The nicotine supplemented this time relieves the feeling of emptiness last time. After the nicotine supplemented this time is metabolized by the human body, it will produce a greater feeling of emptiness, requiring a larger amount of supplementation. The cycle continues over and over again. This is what smokers all over the world are doing. about this matter. \x0d\6. The only way to break out of the endless cycle is to find out the truth about smoking addiction and understand the ins and outs. Only when you know everything before and after quitting smoking can you quickly quit smoking. If you want to know more about the truth about smoking addiction, go to Taobao Quit Smoking University. \x0d\\x0d\Wish you health and happiness!