In the early years of Sui Dynasty, the official script was still rich in official meaning, and the simple and rough style was often a mixed inscription of official script and seal script, such as Epitaph of Yang Tong (collected by the National Library). Judging from the rubbings of stone carvings in the Sui Dynasty collected by the National Library, in the late Sui Dynasty (58 1-600), there were more inscriptions in regular script than official script, and the structure became more and more full, such as Epitaph of Xie Yue (collected by the National Library), and some of them still had the flavor of Weibei. See Cao Mo Ruins (National Library Collection). Another example is Cao Zhi's temple monument (a rubbings collected in the Palace Museum in Beijing), which was carved in the 13th year of Kai (593). The original stone is in Dong 'e, Shandong Province, and the legacy of Zhuanli and the old style of the Northern Wei Dynasty still exist. In the Tang Dynasty, A Praise for Ni Kuan by Chu Suiliang was born in Sri Lanka.
During the Daye period (605-6 18), the meaning of official seal of official script gradually faded in the northern region. For example, the Epitaph of Su Li (collected by the National Library) unearthed in Zouping, Shandong Province in the eighth year of Daye (6 12) not only lost its official significance, but also revealed Ou Yangxun's bold regular script in the Tang Dynasty. The regular script in the Epitaph of Zheng Shanfei, the wife of Du Jun, unearthed in Luoyang, Henan Province in the 13th year of Daye (collected by the National Library) is very mature. Unless the epitaph is dated, it is difficult to tell whether it is Sui or Tang.