It mainly tells the story of Liu Bei's three visits to the thatched cottage to meet Zhuge Liang, who described the current world trend for Liu Bei and made a clear plan for his future. It mainly includes that after years of conquest, Cao Cao seized the emperor and made the princes completely control the north, which could not be stopped; Sun Quan occupied Jiangdong, and after three generations of operation, the foundation has been solid; Jingzhou has convenient transportation, rich products, a land of abundance, and the masters of the two States are not talents. Therefore, Liu Bei must occupy Jingyi County, properly handle the relationship with ethnic minorities, clarify the internal affairs, and unite with Sun Quan in order to resist Cao Cao in the north and even recover the Han Dynasty. That's basically it. The first sentence is the simplest, and a brief explanation of Longzhong is given later. I hope I can help you ~