The four poets of the Southern Song Dynasty are Xu Zhao, Xu Ji, Weng Juan and Zhao Shixiu.
According to the query pin poetry website, the Yongjia Four Spirits are the four poets of the Southern Song Dynasty: Xu Zhao, Xu Ji, Weng Juan, and Zhao Shixiu.
Xu Zhao (? - 1211), also known as Daohui and Linghui, also known as Shanmin, has "Fanglanxuan Collection";
Xu Ji (1162-1214) , the word is Wenyuan, and the word is Zhizhong. No. Lingyuan, he served as the magistrate of Wudang and Changtai counties, and he was good at calligraphy. He has "Erwei Pavilion Collection"; "Wei Bixuan Collection";
Zhao Shixiu (1170-1220), whose courtesy name was Zizhi and whose name was Lingxiu, was a Jinshi of Shaoxi and a former official in Gao'an. He wrote "Qingyuanzhai Collection".
Because they all have the word "ling" in their font names, and they are like-minded friends with each other, and they are both from Yongjia (now Wenzhou City, Zhejiang Province), so they are named Yongjia Siling, also known as Siling Poetry. School, Yongjia School of Poetry.