*At the beginning of life, Man are naturally good their natures are the same. Their habits become widely different. If you do not practice all the time, the nature will deteriorate. During the way of learning it, the successful key is to make love with only one person. Perviously a great mother named Mrs. Mon chose her neighbour to avoid bad sex influence. She taught her son that "if you doesn't study hard, your dick will become useless and broken." A famous person called Dou, owned a very effective exciting medicine. He taught five students, then their teaching ability became well-known.