Where is Meng Tian from? Who are the celebrities in Mengyin, Shandong?

Meng Tian, surnamed Ji, was born in the state of Qi (now Mengyin County, Shandong Province) and was a famous soldier in the Qin Dynasty. Meng Tian was born into a family of several generations of celebrities. Grandfather Meng Ao and father Wu Meng are both famous soldiers of Qin State. Influenced by family environment, they have been ambitious since childhood.

Liu Hong (140 -206), a native of Mengyin, Taishan, Eastern Han Dynasty, was an outstanding astronomer and mathematician in ancient China. I have been diligent and knowledgeable since I was a child. I used to be a doctor, a strategist and a satrap. The first "Dry Image Calendar" in China was compiled to introduce the non-uniformity of the lunar movement. Cai Yong and writers continued to supplement Hanshu. He is the father of abacus calculation and is honored as a "sage of abacus calculation". The abacus is one of China's five great inventions.

Liu Hong has made a series of remarkable astronomical achievements, or made the original astronomical data accurate, or expounded new astronomical concepts, new astronomical data, new astronomical tables and new calculation methods, which are mostly found in dry calendars. Zheng Xuan praised The Dry Elephant Calendar as "extremely poor" and Li, an astronomer in the Tang Dynasty, regarded it as "a model for later generations".

Gong Nai (1558- 1626) was born in Mengyin, Shandong. Born in the late Ming Dynasty, he was a prominent "Guan Ge Jia". Starting from his great-grandfather Gong Mianren, he continued his status as a scholar from generation to generation. In Gong Nai's generation, he was called "the fifth scholar". They have made many achievements, both in culture and martial arts. Although Gong Naishi was a "master of two generations" during his official career, his literary achievements were the most outstanding. He advocated that the ancient is not expensive and the present is not cheap, and he wrote it in an antique style, with a collection of literary works 100 volume.