Yesterday, when I arrived at home, I found my wife seem to be sad. I asked her what's wrong. She told me that my two-years old baby's teacher said my baby put her too much trouble because my baby often pees in his pants. I was very angered when I known the reason. It is normal for a two-years old baby to have no consciousness and awareness of self-control. In addition, as a teacher, she have the responsibility to teach and nurture  her students to how to master some necessary capability instead of complaining to their parents. Maybe we need to do some communication with my baby's teacher or the principal of kindergarten. We have began to think whether we should change a kindergarten for my baby due to the teacher's behaviour.