Knowing the world three points before graduation means that Zhuge Liang and Liu Bei talked about the general trend of the world when Liu Bei inspected the cottage, which is also the process of showing his talents to Liu Bei and Liu Bei inspecting Zhuge Liang. Zhuge Liang put forward suggestions for Liu Bei's future development during the conversation, and predicted that if Liu Bei followed this trajectory, there would be a three-legged situation in the future.