Those who have achieved great success in ancient and modern times must go through three realms when asking questions: "The west wind withered the green trees last night. A person goes to a tall building and sees the world. " So is this first place. "The wider the clothes are, the more you don't regret it, which makes people haggard for Iraq." So is this second environment. "Everyone looked for him a thousand times and suddenly looked back. The man was in the dim light." So is this third place.