Some people say it's official script, but it's not official script. It belongs to regular script. Theoretically speaking, regular script can be roughly divided into two categories, one is Tang script, such as Liu style, Yan style and European style. The second category, Weibei category, appeared earlier than Tang Kai and was in the transitional period between Han Li and Tang Kai. It has both the charm of official script and regular script, but it is still classified as regular script. The word "bank" basically comes from Wei Bei's masterpiece "He Ru". So Wei Bei is dressed in black.
If you have different opinions, you can go to my blog and discuss with Zong Chengdao.