Wei and Jin Dynasties: The Preface to the Orchid Pavilion Collection and Mourning Post written by Mrs. Wei, Wang Xizhi and his father and son is exquisite in brushwork, elegant in brushwork, tactful and implicit in brushwork, like flowing water.
Sui and Tang Dynasties: Yan Zhenqing, Liu Gongquan Yan's "The Tower Monument" and Liu's "The Xuanta Monument" Yan Jieshu turned against the calligraphy style of the early Tang Dynasty, became thin and hard, became plump and vigorous, and was magnificent. They vigorously pursued the brushwork of Wei Jinxia and the early Tang Dynasty, and were influenced by Yan Zhenqing. Its vigorous calligraphy style can be compared with Yan Shu, and later generations have the reputation of "Yan Gu".
Song and Yuan Dynasties: Zhao Mengfu's thousand-character essay Zhao Mengfu not only combines hook shadow, painter and ink painting, pen and ink, reference and innovation, but also combines the chivalrous atmosphere of Gao Yi and the atmosphere of dissolute literati.