Korean Confucianism
Under the succeeding Han Dynasty and Tang Dynasty, Confucian ideas gained even more widespread prominence. During the Song Dynasty, the scholar Zhu Xi (AD 1130–1200) added ideas from Taoism and Buddhism into Confucianism. In his life, Zhu Xi was largely ignored, but not long after his death his ideas became the new orthodox view of what Confucian texts actually meant. Modern historians view Zhu Xi as having created something rather different, and call his way of thinking Neo-Confucianism. Neo-Confucianism held sway in China, Japan, Korea and Vietnam until the 19th century.
Zhu Xicai
Little is known about Zhu Xicai's background, and it is not known when he was born. According to the Tang Dynasty historian Ping Zhimei (平致美), whose "Jimen Jiluan" (薊門紀亂) is no longer extant but is often cited in other works, he served under Shi Chaoyi, the final emperor of the state of Yan during the An Shi Rebellion against Tang Dynasty rule, and, after Shi Chaoyi had become emperor after assassinating his father Shi Siming in 761, the Yan general remaining at the major city of Fanyang (范陽, in modern Beijing) went through major bloody infighting, at the end of which Li Huaixian emerged the victor. Zhu Xicai was then serving under Li, and he remained at Fanyang to continue to serve under Li after the disturbance. After Li submitted to Emperor Daizong of Tang in 763 and turned against Shi Chaoyi (leading to Shi Chaoyi's committing suicide, ending Yan), Zhu continued to serve under Li.