Yu Xu did make some achievements in some areas of calligraphy, for example, his calligraphy is very good. However, he is not good at writing regular script. I guess from the term regular script that he should be able to write basic regular script, but his level is definitely average. Because of his lack of efforts in this respect, there are some misunderstandings in dealing with regular script, which is criticized by almost all people who study traditional calligraphy today, especially his view of "creating modern calligraphy", which is particularly absurd. In order to develop what he called "modern scripts", he
In a word, I haven't seen his regular script.