That day, walking in the park, I saw a sign with the words “Spitting everywhere, offenders will be fined”. I read it again and again, but it was still very messy. Do you want to spit a mouthful of phlegm on the ground to prevent being fined? On the other hand, the reason why such funny placards appear is that many Chinese have the bad habit of spitting everywhere, which is not only popular in China but also famous in the world. Until today, there are still many small partners who are confused. Why can’t they spit everywhere? Do you have to spit out all the phlegm? What about how’s graceful sputum treatment? Phlegm is what? When people breathe air, Read More …