Zhu Xi
In 1179, after not serving in an official capacity since 1156, Zhu Xi was appointed Prefect of Nankang Military District (南康軍), where he revived White Deer Grotto Academy. and got demoted three years later for attacking the incompetency and corruption of some influential officials. There were several instances of receiving an appointment and subsequently being demoted. Upon dismissal from his last appointment, he was accused of numerous crimes and a petition was made for his execution. Much of this opposition was headed by Han Tuozhou, the Prime Minister, who was a political rival of Zhu's. Even though his teachings had been severely attacked by establishment figures, almost a thousand brave people attended his funeral. After the death of Han Tuozhou, Zhu's successor Zhen Dexiu, together with Wei Liaoweng, made Zhu's branch of Neo-Confucianism the dominant philosophy at the Song Court.
Xu Shen
Xu Shen ( CE) was a Chinese scholar-official and philologist of the Eastern Han Dynasty (25-189). He was born in the Zhaoling district of Run'an prefecture (today known as Luohe in Henan Province). During his own lifetime, Xu was recognized as a preeminent scholar of the Five Classics. He was the author of "Shuowen Jiezi", which was the first comprehensive dictionary of Chinese characters, as well as the first to organize entries by radical. This work continues to provide scholars with information on the development and historical usage of Chinese characters. Xu Shen completed his first draft in 100 CE but, waited until 121 CE before having his son present the work to the Emperor An of Han.
Xu was a student of the scholar-official Jia Kui 贾逵 (30-101). Under Jia, he established himself as a master in his own right and enjoyed a positive reputation. This education allowed him to hold several government offices at the prefecture level, and ultimately rise to a post in the royal library. Before undertaking the "Shuowen", he was already a prolific writer. Although lost, one of his better known early works was a commentary on the Huainanzi, an important sociopolitical work from the second century BCE.