This old man has been there fishing for many hours without catching a fish. I guess that he is enjoying the process of fishing. With that in mind, with or without a fish does not bother him anymore.
年轻人到城市里讨生活,同时也享受城市里的娱乐;老人独居乡村,享受钓鱼之乐,希望他钓鱼的时候不会感到孤独和寂寞~~~~~~~