In calligraphy, this font was named Nangong Style because Mr. Zhang Yuzhao personally wrote Rebuilding Xue Ji Monument in Nangong County.
This font had a great influence when it was first created, so there are so many copybooks published for this font now. You can find it on Taobao or in a physical store.
(In addition, the so-called Nangong style of Hanyi is only a computer font, which needs to be distinguished from Nangong style. )