A few words from Guan Ju to Liu Bei.

It is "Pang Shiyuan is not a hundred talents", which is what Guan Ju said in his letter to Liu Bei. Also recommended by Zhuge Liang, Liu Beicai valued Pang Tong, made him a military commander, and followed Liu Bei to give up. Guan Lu (2 10-256), born in Pingyuan County (now Pingyuan County, Dezhou, Shandong Province), was the founder of ancient divination. When I was eight or nine years old, I liked watching the stars. As an adult, he is proficient in Zhouyi, good at divination, physiognomy, arithmetic and learning bird language. According to legend, every word is superb Generous, good for evil. In the early years, he served as Shao Fucheng. In the third year of Jacky (256), he died at the age of 47. In the third year of Daguan (1009), Guan Ju was chased by the Northern Song Dynasty for his achievements in arithmetic.