Bing Yuan A native of Zhuxu in the Eastern Han Dynasty. In his youth, he and Guan Ning were both known for their noble sentiments, being brave and resourceful. In his hometown, there was a continuous stream of scholars traveling for learning, and the sound of teaching never stopped. Later, he submitted to Cao Cao and served as the chief clerk of military officers. He lost his father at a young age and his family was poor. Once, he passed by a school and wept. The teacher asked him the reason, and he replied, "I have no money to study." The teacher said, "If you want to study, you don't need money." Then he studied hard and became a well - known scholar. Bing Yu A native of Chengyang in the Jin Dynasty, the great - grandson of Bing Yuan. He was self - disciplined and, together with Liu Er of Gaomi, had a high reputation. Emperor Cheng of the Jin Dynasty, Sima Yan, widely sought people with extraordinary conduct and summoned Bing Yu as a doctor. Bing Yu declined the summons on the grounds of illness. Bing Han A native of Langya in the Han Dynasty. He was recruited because of his noble conduct, served as the governor of Jingzhao, and was later promoted to a grand master. After Wang Mang usurped the throne, he retired to his hometown and refused to associate with the usurper. Bing Fu A native of Yueyang in the Later Zhao Dynasty. He was studious and talented, and good at conceiving ideas. All the palaces and pavilions in Xiangguo (now Xingtai County, Hebei Province), the capital of the Later Zhao Dynasty, were built by him. He was named the general in charge of building materials by Shi Le, the ruler of the Later Zhao Dynasty.