He was a great astronomer, mathematician, inventor, geographer, cartographer, poet and official of the Han Dynasty in the Eastern Han Dynasty, and made indelible contributions to the development of astronomy, mechanical technology and seismology of the Zhang family in China.
Inventors of armillary sphere, seismograph and compass. There are many books and scientific research achievements, which are called "Kesheng" and named after "Zhangheng Crater and Zhangheng Asteroid".
2. Zhang Daoling (34 ~ 155), the true founder of Taoism, was the first teacher. The real name is Ling, who was born in the Eastern Han Dynasty (now northwest of Suxian County, Anhui Province). Zhang clan click to join Zhang clan to confuse people by binding spells, so scholars have to pay five dou meters, so it is called the world's five dou meters road. Also known as Zhang Tianshi. He is the author of Old Xiangzi Jules and so on.
3. zhangqian? ~ Former 1 14), Wen Zi, a native of Chenggu (now Chenggu County, Shaanxi Province) in the Western Han Dynasty. When Liang Wudi was a military attache, he paid homage to the corps commander, sent ambassadors to Wusun, and sent envoys to Dawan, Kangju and Daxia. Since then, the communication between the northwest countries and the Han Dynasty enabled the Han Dynasty to communicate with Central Asia, opened up two routes to the western regions, and introduced excellent horse breeds, grapes and alfalfa.
4, Sean (former-former 186), the word ovary. A famous minister, politician and strategist in the early Han Dynasty. One of three outstanding heroes of early han dynasty. Originally from Korea, Historical Records Liu Hou records: "First from Korea. The great father opened the land to welcome Han Zhaohou, King Xuanhui and King Ai Xiang. Father Ping, Wang, mourn. In the twenty-third year of mourning for the king, his father died flat. A young man who has never been an official in Korea.
Qin wanted to destroy Korea for revenge, which made people attack the first emperor in Bolangsha. If he missed, he changed his name and surname and hid in Xiapi, but he was killed by Taigong's art of war. Later, he planned the world for Gaozu and was called "the first counselor". Seal Liu Hou. Good evening, Huang Lao. Learn the art of crossing the valley. The death of wencheng. 5. yi cheung (former? ~ 309), during the Warring States Period, A Liang of Wei (now Kaifeng, Henan). Politician, diplomat, strategist, strategist. Guiguzi's favorite pupil, like King Hui of Qin, used Lian Heng's strategy to lobby the six countries to betray the treaty and work for Qin. When Hui Wang died, the six countries jointly promoted Qin, and the ministers slandered him, but they went to Qin for Wei Xiang.