Is Du Fu a poet in Tang Gaozong's time?

No, Du Fu was not born when Tang Gaozong died. Du Fu was a poet who turned from prosperity to decline in the prosperous Tang Dynasty, and his main creative periods were Xuanzong and Tang Suzong.

Li Zhi, Tang Gaozong (2 1, 628—65438, February 27th, 683), with a good word. The third emperor of the Tang Dynasty, Han nationality. Temple number Gaozong, posthumous title Great Sage, Emperor Xiao Hong. Zhenguan was born on June 13th in the second year (628) and died in the first year of Hongdao (683) at the age of 56. The ninth stone of Taizong, the mother of Wen Deshun.

Tang Suzong Hengli, the ninth emperor of the Tang Dynasty, was originally named Gui Li, the son of Li Longji, Emperor Xuanzong of the Tang Dynasty. He reigned for five years (756 ~ 762) and died in a palace coup at the age of 50. During his reign, the central government of Li Tang gradually collapsed, which was the beginning of the decline of the Tang Dynasty.

Du Fu (7 12 ~ 770) was beautiful as a flower, whose real name was Shaoling Yelao, Han nationality, and he was born in Gongxian County, Henan Province (now gongyi city, Henan Province). He is as famous as Du Gongbu and Du Fu, and he is a great realistic poet in the prosperous Tang Dynasty. He is concerned about the country and the people and has a noble personality. He wrote more than 1400 poems in his life, and his poetic skills were exquisite, so he was called "poet saint" by later gods.