Fine gold strokes are thin and hard, so it is advisable to write fine gold with a hard pen. It is recommended to use wolf hair or purple hair. The first choice is Gou Xianbi. Because when Song Huizong and Evonne wrote Thin Golden Body, they used long peak wolf hair. According to Jinsheng Qiu Gao, the inheritor of China's first rare book, it is said that Song Huizong often used Gou Xianbi, a wolf with a long front face, which was originally used for painting. The length of this pen tip is 7- 10 times the diameter. It is really necessary to use such a slender pen to write this kind of words, so as to show the slender beauty of the thin gold body and the tall and straight style of flesh and blood. There are "four virtues" in brush selection, namely, sharpness, uniformity, roundness and health. Four virtues refer to the function of the pen itself, and we should also consider the copybook when choosing the pen. The best way to judge what kind of pen to use is to look directly at the handwriting of the copybook: if the style is strong, choose Hao Jian; If you are charming and plump, choose soft; Hard and soft, and then choose double brush. The characteristics of the pen also affect the written calligraphy, thus achieving the wonderful scenery of calligraphy. Song Huizong's fine gold font is more dynamic, so you should choose Hao Jian. Health: the elasticity of the pen waist; Press hard, lift the pen, and then return to its original state. If the pen is flexible, it can be used freely; Generally speaking, rabbit hair and wolf hair are more elastic than wool, and books are strong and firm. In this regard, press the pen after wetting, and the front is straight and healthy. Thin gold body thin gold body is created by Zhao, also known as body, which is a kind of calligraphy with great personality in the history of calligraphy. This book should be "skinny" in image. Changing "gold" into "tendon" is a respect for imperial books. Because of its different styles from traditional calligraphy such as Kincaid and Tang Kai, it is a great innovation in the history of calligraphy. The thin gold body is smart and quick, and the handwriting is thin and powerful, so that it is thin without losing meat, and the big characters are particularly attractive. Because of its thin and hard strokes and exposed brushwork, you can clearly see the traces of running Teton and other strokes. This is a very unique font. Song Huizong's calligraphy strokes are thin and hard. He studied under Huang Tingjian at first, then under Chu Suiliang, Xue Ji and Xue Yao, and mixed with other schools to learn from each other's strong points and express their opinions, and finally created a unique "thin gold book" style, which had great influence. Calligraphy in Song Dynasty is good at rhyme and interest, and Evonne's "The Book of Thin Gold" embodies similar aesthetic interest of the times, which is called "the beauty of heaven and bones is beautiful, and the interest is dull"; It also has a strong personality color, the so-called "such as bending iron and breaking gold." This calligraphy style has never appeared in previous calligraphy works.