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During the Three Kingdoms period, Zhuge Ke, son of Zhuge Jin (Zhuge Liang's elder brother), was exceptionally intelligent from a young age.
After growing up, Sun Quan appointed him Grand Tutor to the Crown Prince.
Zhuge Ke was dissatisfied with Crown Prince Sun He. After Sun Quan's death, he immediately deposed the Crown Prince, replacing him with the ten-year-old Sun Liang as emperor, and took full power himself.
Swelling with pride, he wrote to his younger brother Zhuge Rong, stating: "Grief and joy are intertwined, and I am at a loss as to what to do."