不改其乐

Explanation: Do not change their own happiness. Refers to the situation in the hardship still very happy. 　　Source: "The Analects of Confucius Yong" a food basket for cooked rice, a floating drink, in the alley, who bear the interference, do not change the music back out. " 　　Examples: (Confucius) praised the food and drink is not enough ,'~'。 Yen Hui (Qing "on the dinner")