This article describes a group of wildebeests who are cornered. In order to win the survival chance of the population, they sacrificed half to save the other half to get out of trouble. In fact, the text has no remorse or lashing for greed, cruelty, hypocrisy and bullying in human nature. I don't know how to improve students' ideological quality under the cruel concept and alienated aesthetic cultivation. I wonder what 12, 13-year-old children will think when they see the tragic scene of impala crying like a mother.