Is it better to practice regular script calligraphy faster or slower?

Generally speaking, writing regular script is slower. In fact, running script, even cursive script, is not necessarily fast when written, just from the words written. Pay attention to the rhythm when writing. Although regular script should be slow, the process of writing should be smooth. For example, when writing horizontally, you should start writing slowly, and you can't stop writing in the middle, so you should do it at one go. For another example, to write "B", you should not only start and close the pen slowly, but also pause at the inflection point, and other parts should be smooth.