Mr. Dongguo extended the principle of "universal love" to a wicked wolf, nearly bringing disaster upon himself. This fable teaches us that even in human relationships, there exists the "Mr. Dongguo" problem. One should sincerely love the people but should never show mercy to evil individuals akin to wolves. Today, "Mr. Dongguo" and "the Zhongshan wolf" have become fixed terms in the Chinese language. "Mr. Dongguo" specifically refers to those who indiscriminately show compassion without distinguishing right from wrong, while "the Zhongshan wolf" refers to those who are ungrateful and repay kindness with enmity.