Wave by Leilei GuoThese days, the living spaces in which human beings reside become smaller and smaller; the boundaries of regions become blurred and indistinct, and people from different countries and nations live and mingle amongst each other. In the east, we find many Westerners living and working, and in the west, many easterners. In this globalized world and its international cities, people have different skin colors, yet use the same language. Sometimes we even