And "opening and closing" is a very common way to break the balance. When writing, in order to create a good impression, you will deliberately show a sense of tension or introversion.
This kind of feeling, for those of us who don't know how to do things, will feel that we have not written according to the "rules" we understand. But because these words are well written, we still retain the basic aesthetics, so the first impression is still good.
And I think these words are crooked because they are not written in block letters, which may be cursive or official scripts. In short, we use some words that we are not familiar with or know.
However, if you look at these words carefully, you will find that they are actually the same sex. For example, the size of words, the spacing between words, the starting and closing of words, and the fluency between words all give people a very comfortable feeling.
This is why most people can't understand famous paintings. The same is true of looking at photographs. In fact, I can't understand the deep meaning that the author wants to express. You can only see the appearance of the work, but you can also know that it is a very good work through these appearances.
In addition, people are always in awe of things in unknown areas and dare not evaluate them easily. Calligraphy, on the other hand, is far away from most people, and may never come into contact with it except for writing it several times in primary school.