About: How to sweep the world without sweeping the house? -"The Biography of Chen Fan in the Later Han Dynasty" Chen Fan, a famous minister in the Eastern Han Dynasty, lived alone in one room when he was young, and his courtyard was filthy. Qin Xue criticized him: "Why don't the obedient guests sweep?" Chen Fan replied: "When a man is a man, he should sweep the sky and land." Qin Xue immediately retorted: "How can we sweep the world without sweeping a house?"