Who is Yuan Tiangang? What about Liu Bowen? Which dynasty?

Yuan Tiangang, an astronomer, astrologer, forecaster, feng shui master, Taoist priest and fortune teller in the early Tang Dynasty, was born in Chengdu, Yizhou (now Chengdu, Sichuan). Being good at study style, he was so tired that he was ordered by Yan Guan in Sui Dynasty and Huojing (Lin Qiong) in Tang Dynasty. He is the author of Six People's Journey, A Picture of Five Elements, Three Generations of Photography, TuiBei (Li) and Yuan Tiangang's Ode to the Bone. There is a volume of Yi Xuan Jing Yao in Tongzhi Shi Lu. Nine one. Gao Yuxiang, the founder of the contemporary Yiyang School, commented on Yuan Tiangang: "The name is like a bright moon covering a thousand years, and the sound is like Lei Zhen in ancient and modern spring."

Liu Ji (13 1 1 July1375 May 16), Han nationality, was a native of Nantian Township, qingtian county (now wencheng county, Zhejiang Province), so he was called Liu Qingtian, a military officer in the late Yuan Dynasty and early Ming Dynasty. In the ninth year, Wu Zongzheng granted a surname posthumously, posthumous title Wencheng, who was later called He Wencheng Gong. Liu Ji knows the history of classics, knows astronomy and can choose soldiers. He assisted Zhu Yuanzhang to complete the imperial industry, founded the Ming Dynasty, and tried his best to maintain the stability of the country, so he became famous all over the world and was compared to Zhuge Wuhou by later generations. Zhu Yuanzhang repeatedly called Liu Ji: "My ovary is also." In the history of literature, Liu Ji, Song Lian and Gao Qi are called "the great poets in the third day of Ming Dynasty". China folk widely circulated that "the world is divided into three parts, and Liu Bowen is unified; Zhuge Liang, a former strategist, and Liu Bowen, a later strategist. He is famous for his clever calculation and strategizing. [