Master Xu, Katsuharu, was an ancient Chinese martial arts novel. His works used martial arts, xianxia, and fantasy as the theme. His writing style was beautiful and his thoughts were profound. He was known as the "first master of Chinese martial arts novels." The following are some famous lines from Master Xu's works: Heaven and earth are heartless and treat all living things as straw dogs. I see the prosperity of the world with my eyes and feel the warmth of life with my heart. 3. Right and wrong are only for the sake of opening your mouth. The affairs of the world are as unpredictable as the universe, and the human heart is as deep as the sea. 5. The Tao is naturally governed by inaction. A journey of a thousand miles begins with a single step. 7. The difference between a single thought and a world of difference. Life is like an inn, I am also a pedestrian. The vicissitudes of life are like a dream. How is life? Peace. Where is the hero of the green mountains that do not change and the green water that flows forever? on ancient paths the west wind blows, thin horses. These are some of the famous sentences in Mr. Seo's works. These sentences are full of philosophy and deep thinking, showing the author's deep understanding of life and life.