Eternal Life in History: Creating a Three-thousand-year-old Clan!

A terminally ill history enthusiast, carrying a magical jade pendant, transformed into his ancestors, prolonging his own life by ensuring the continuation of his clan, while simultaneously practicing morality, establishing virtue and merit, and writing a profound chapter in history! During the reigns of King Cheng and King Kang, he was valued by Duke Shao for his talent and knowledge, becoming a renowned ruler of a fiefdom and a minister in the court; when King Li was banished, he was welcomed to Haojing for his virtue, acting as emperor and supporting King Xuan's ascension; when King You died, he befriended the Qin people, worked together to restore the capital, and assisted King Ping in ascending the throne and moving the capital eastward; when Confucius established his teachings, he was his first disciple, writing books and biographies, known as the "Sage of Transmission," and revered for generations; when the Qin state rose, he intermarried with the Qin people, becoming a relative of the Qin imperial family for generations, until he facilitated unification and retired after his achievements; during the Chu-Han Contention, he secretly crossed the Chencang pass with Han Xin, and again recounted the virtues of his ancestors, establishing a system for the Han Dynasty that would last for generations; when the Han Dynasty fought against the Xiongnu, he served as a comrade of Wei Qing...