Who is this scholar? () Hint: Geng Shi in Sui Dynasty.

Geng Xun, an astronomer in Sui Dynasty. The word Dunxin was born in Danyang (now Nanjing, Jiangsu). Chen Mo stayed in Lingnan and became the leader of the local people. Sui captured Wang as a domestic slave and built a hydraulic armillary sphere. Emperor Wen knew it and regarded it as an official slave of Taishi Bureau. After being repaired, he was beheaded and invited to avoid death. Leak immediately. At first, Emperor Yang Di regarded it as a good thing. It is also said that divination predicts that the attack on North Korea will fail. To Tai Shicheng. Yang-ti died and wanted to return to Tang Gaozu. He was killed by Yu Wenhuaji.