Hard pen Copybook for calligraphy whose is better?

Hard pen and writing brush are the same. It is best to choose ancient inscriptions. After all, those are all notarized by history. Some calligraphers now write really well, and no one knows them. When Cai's value soared after his death, some of them were famous before his death, and no one knew it for a few years after his death. They were not famous when they were alive, and they were mixed with too many factors. After their death, history will give him justice. Of course, there are many well-known and well-written ones, but they are all better than those carefully selected for thousands of years.