Xu Shu, valued by Liu Bei for his strategic talents, was appointed chief military advisor after several victories against Cao Cao. Jealous, Cao Cao's advisor suggested a plot: bring Xu Shu's mother to Xuchang and forge a letter in her handwriting, asking him to come. Known for his filial piety, Xu Shu tearfully received the letter and requested immediate leave from Liu Bei. Though saddened, Liu Bei persuaded him to stay one more night to share their sorrow.
The next day, Liu Bei held a farewell banquet outside the city. Holding Xu Shu's hand, he wept, saying, "Only heaven knows when we will meet again." After departing, Xu Shu suddenly turned his horse back. "I nearly forgot something important," he said. "Ten kilometers from Xiangyang, in Longzhong, lives Zhuge Liang. Would you like to meet him?" Liu Bei eagerly agreed but questioned Zhuge Liang's talent. Xu Shu assured him, "He reads the stars, understands all earthly matters, and discerns a person's true nature at first sight—the greatest talent under heaven. With him as your advisor, you will rule the land." When Liu Bei suggested Xu Shu invite Zhuge Liang on his behalf, Xu Shu shook his head. "You must personally extend the invitation. His acceptance depends entirely on your sincerity." With that, Xu Shu rode away. Later, Liu Bei made three visits to Zhuge Liang's thatched cottage, a story beloved by the Chinese people.