Why do many books say that Yan Zi should be written against the wind? I don't think it's reliable. Many horizontal strokes are sharp and square. I really don't understand. I

The Tang Dynasty's facial style is also a pen tip, not a pen against the wind. In the Song Dynasty, it began to be understood as a brush against the wind. It is said that most of the precious characters left by the ancients are severely weathered and denuded, and it is too early to interpret them. So it is understood as writing against the wind. Mr. Qi Gong once said that it is right to solve the pen stroke through the pen gesture. There is certainly nothing wrong with writing against the wind. Mr. Qi Gong also said that calligraphy is not so sacred, and the most important thing is to teach people how to understand it.