China's calligraphy is the art of writing. To learn calligraphy, we must first understand the source and structure of words. The origin of Chinese characters can be traced back to five thousand years ago. Oracle Bone Inscriptions, who had a complete structure 3000 years ago, showed some perfection in writing skills and tools. Xia, Shang and Zhou dynasties are the initial stage of calligraphy art, but it is a pity that archaeological excavations have not found more complete Xia dynasty characters so far. The characters of Shang and Zhou dynasties have already possessed three important factors, namely, the use of pen, structure and composition, which are necessary for calligraphy art. At this time, calligraphy was initially formed. Calligraphy in this period is mainly embodied in Oracle Bone Inscriptions, bronze inscriptions, Shi Guwen, silk books and bamboo slips. During this period, Chinese characters changed from application to art and from naivety to perfection, thus establishing the special position of China's calligraphy art.

Oracle Bone Inscriptions is the earliest recognizable character in China. Oracle Bone Inscriptions, written or engraved on tortoise shells and animal bones, also has several notes. But in modern history, it was discovered by Wang Zaiguang Xu in the 25th year (1889). According to statistics, there are more than 50,000 pieces of150 in Oracle Bone Inscriptions, with about 4,500 non-repetitive words and about 1500 recognizable words. These characters are carved with sharp tools, and some are written in ink or Zhu calligraphy similar to a brush. The strokes are thin, hard and straight, and the lines, regardless of thickness, are thick and three-dimensional, showing the sculptor's skillful skills in carrying knives like pens. Calligraphy styles also vary from time to time, either fine and dense, or sloppy and extensive. Dong Zuobin once divided the characteristics of oracle calligraphy's times: the first period (Wuding), majestic; The second stage (Zu Geng, Zujia), sincerely; The third period (Yan Xin, Kangding), decadent; The fourth period (Wen Ding Wuyi) is steep; The fifth question (Emperor I, Di Xin) is neat. From the perspective of the times, the early characters are generally large, the middle characters are small and simple, and the late characters have some characteristics of bronze inscriptions, and some are small and rigorous.

Most of Oracle Bone Inscriptions were carved with a knife, some were filled with Zhu after carving, and a few Oracle bones were written without carving. Explain that Oracle Bone Inscriptions is generally directly engraved, and some are written first and then engraved. From here, we can know that Oracle Bone Inscriptions's lines not only have brushwork, but also contain brushwork, which cannot be ignored. Due to the limitation of tool materials, its lines are thin and sharp, with straight lines and curves; There are single and double knives. It is often thick in the middle and pointed at both ends, but there are still some Fiona Fang methods at the beginning and end of stippling; Some straight paintings are slightly melodious, and the line stippling is rich and varied. The structure of Chinese characters is generally a flat rectangle, and the combination of Fiona Fang curve and straight line is very meaningful. Oracle Bone Inscriptions is arranged vertically, from top to bottom, from left to right or from right to left.

Oracle Bone Inscriptions already has the rules for the construction of six Chinese characters (pictographic characters, knowing characters, referring characters, borrowing words, transferring notes, pictophonetic characters and phonological characters). Oracle Bone Inscriptions has included many elements of calligraphy art, and from its stippling, writing, style and composition, it is seamless and changeable, reflecting the artistic skills and cultivation of businessmen.