A singer once asked Li Puchan, a famous calligrapher, which Chinese character was the most difficult to write in China. Li Puchan said that there was one word that was the most difficult to write. Difficulty is only a relative problem, there is no absolute difficulty, and there is no absolute ease. As I said before, ghosts are the hardest to draw, because no one has ever seen a ghost. On the other hand, ghosts are the easiest to draw because no one has ever seen them. You call it a ghost, and it is.
The child says it's best to write, because you can write well with a wave of your hand. There is no need to ask him if he writes well. Calligraphers say "Yi" is the most difficult to write, because it is really difficult for calligraphers to write a certain level of artistry, because a word is really limited in structure, brushwork, reality and contrast, so it is difficult to write. However, it is because writing is not easy that we can see the true foundation of calligraphy.
Wang Xizhi practiced the word "one" not because it was difficult to write. Among thousands of Chinese characters in China, it is much more difficult to write "one". Writing a word "one" well is the basic skill of calligraphy, just like a martial arts practitioner, starting with a stance of "ma bu", the stance of "ma bu" is steady, the lower body is steady, and the foundation of practicing kung fu is good. So in the same way, writing "one" or writing the basic strokes of these Chinese characters horizontally and vertically is the basic skill of calligraphy.