Li Linfu
Li Linfu () (died January 3, 753), nickname Genu (), formally the Duke of Jin (), was an official of the Chinese Tang Dynasty, serving as a chancellor for 18 years (734–752), during the reign of Emperor Xuanzong—one of the longest terms of service for a chancellor in Tang history, and the longest during Xuanzong's reign.
Li Chunfeng
Li Chunfeng () (602–670) was a Chinese mathematician, astronomer, and historian who was born in today's Baoji, Shaanxi during the Sui and Tang dynasties. He was first appointed to the Imperial Astronomy Bureau to help institute a calendar reform. He eventually ascended to deputy of the Imperial Astronomy Bureau and designed the Linde calendar. His father was an educated state official and also a Taoist. Li died in Chang'an in 670.