I didn't pay much attention to my teeth before. At a class reunion, my friend inadvertently said, Your teeth are so yellow! Makes me feel bad! So it didn't take long to make my teeth whiter and look better. I had a tooth cleaning here in Renhe, and the effect was good. My friends all said that I loved to laugh more than before ~ Because my teeth were whiter, of course I laughed more happily ~ But I can't wash them often ~ I can still drop O (∩ _ ∩) O once in a while ~