query: When did Li Linfu serve as chancellor of the Tang Dynasty?
passage: Li Linfu
Li Linfu (Chinese:李林甫; pinyin:Lǐ Línfǔ) (died January 3, 753[1]), nickname Genu (Chinese:哥奴), formally the Duke of Jin (Chinese:晉公), 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.[2]
passage: Li Ying (prince)
Li Ying (李瑛) (died 737), né Li Siqian (李嗣謙), known from 725 to 736 as Li Hong (李鴻), was a crown prince of the Chinese dynasty Tang Dynasty during the reign of his father Emperor Xuanzong. He was later removed and forced to commit suicide due to the machinations of Emperor Xuanzong's favorite concubine Consort Wu and her ally, the chancellor Li Linfu.