This book mainly tells a real and touching story that the author experienced personally when he was in primary school. After the author Xiao Doudou was expelled from the original school for being naughty, he went to visit Ba Xueyuan with his mother. I fell in love with the headmaster the first time I met him and thought he was very amiable. The headmaster also thinks Xiao Doudou is very cute. Under the care and guidance of President Kobayashi, in the end, President Kobayashi cultivated Xiao Doudou into a lovely and well-educated child. Xiao Doudou is a kind-hearted and helpful boy. How rare it is! I like President Kobayashi's educational methods very much. He is always thinking about his children. When he grew up, Xiao Doudou became a famous Japanese writer, TV presenter and UNICEF goodwill ambassador.