Who are the two "Jinling Four Masters" (Lin Sanzhi, Gao Ershi, Hu Xiaoshi and Xiao Xian) who are good at cursive writing?

Lin Sanzhi and Gao Ershi devoted their whole lives to the study of calligraphy. Both of them are famous for their cursive script, and they have the reputation of "two saints of cursive script". They regard each other as confidants in poetry research. Hu Xiaoshi is a master of literature. He is good at the study of ancient inscriptions. His calligraphy is based on Zhong Ding's seal script, mainly on the north tablet, and full of vitality and vigor of ancient wood. Kang Youwei's female disciple, Xiaoxian, has a heroic life and a vigorous brushwork. The huge list is based on Qin and Han dynasties, and she has learned from her blood. She saw heroism in simplicity and harmony in honesty, which is very similar to Hu Xiaoshi's flat book.