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 Xuan
It is not known when Zhu Xuan was born, but it is known that he was from Xiayi (下邑, in modern Suzhou, Anhui). As of 882, he was serving under Cao Cunshi (曹存實) the military governor of Tianping Circuit, when Cao was killed in battle when Tianping came under attack by Han Jian the military governor of neighboring Weibo Circuit (魏博, headquartered in modern Handan, Hebei). Zhu took over the defense of Tianping's capital Yun Prefecture (鄆州) after Cao's death and was able to prevent it from falling to Han. Then-reigning Emperor Xizong thereafter made Zhu the acting military governor.