Is the crash course in calligraphy credible? You can learn to write a good hand in five days.

Can't be like this? The study of calligraphy must go through a long time. A crash course can give you some skills or precautions, and you will probably learn them one by one. Hehe, if you really want to learn, you can sign up for a formal class or find Si Mayan or ancient Wang Xizhi, Wang Xianzhi, Zhao Mengfu, Wen Zhiming and other copybooks to keep practicing. I believe you can write beautifully! ~~~