The reason why Yong character is favored by learning calligraphy is because of the importance of the eight methods of Yong character put forward by Wang Xizhi, and it happens that the first word in Lanting Preface is Yong character, so people deify the role of using characters. In fact, the word Yong does not contain all strokes, so it is not enough to learn calligraphy and just write it. I think Yongzi's calligraphy effect is exaggerated.
It is necessary to learn the Eight Methods of Yong Zi, but it is not that you can learn calligraphy well by learning the Eight Methods of Yong Zi, or you need to practice and ponder more.