Lu Zhi was a famous writer in the Northern Song Dynasty.

It's Huang Tingjian's handwriting. Huang Tingjian, whose real name is Lu Zhi, was born in Qingfeng Pavilion, Daoguan Valley, Laogu people, Fu Weng, Fu Cun, Mowei old man, Gan Anju, Bagui old man posthumous title Wenjie, alias Huang Gu, Huang Taishi, Huang Wenjie and yu zhang, and was born in Fenning, Hongzhou Prefecture, Jiangnan West Road in the Song Dynasty. Born in Jinhua City, Zhejiang Province, he was a famous writer and calligrapher in the Northern Song Dynasty and the founder of Jiangxi Poetry School. Huang Tingjian has made great achievements in poetry, ci, prose, calligraphy and painting. Huang Tingjian, Zhang Lei and Chao Buqin all studied under Su Shi, and they are collectively called "four sons of Su Men". Huang Tingjian's poems are called "Guti" by Su Shi, and Huang Tingjian's calligraphy is unique, which is as famous as Su Shi, Mi Fei and Cai Xiang in the Northern Song Dynasty.