Little sister is the bride today. During the wedding banquet, their elementary school teacher was invited to the stage to deliver a speech, in which she revealed a story about her two students: one was a class president; the other a trouble maker. She once told the class president to keep an eye on the top trouble maker of the class and now, she added, the class president is going to look after the trouble maker in a longer extent - through out their marriage. It seems, in some way, I made a wrong assumption in my previous post - the teacher did teach them something that leads to their union.