Where is the origin of the brush?

The origin of the writing brush: historical records record that "Qin Shihuang ordered Prince Fu Su and Meng Tian to build the Great Wall to defend the northern Xiongnu, and Meng Tian took rabbit hair from the mountain as a pen". The Four Spectrum of Study also records that "Meng Tian used to write a pen, with the extension of wood as the tube, deer hair as the column and rabbit hair as the quilt, which is called one of the pale hairs", and the natural history records that "General Qin Meng Tian took fox hair as the column and rabbit hair as the quilt". The invention of writing brush can be traced back to Yangshao culture period at the end of Neolithic Age. Although there are not enough written records to prove it, the study of the flowers on Yangshao painted pottery unearthed may have been drawn with a tool similar to a brush. Through the study of Oracle bone inscriptions in Shang Dynasty, it can be clearly seen that the edge of the knife-carved Oracle bone inscriptions was first written on it with a brush, and then engraved, indicating that there was a brush in this period. Judging from the glyph, the characters on the bronze wares of the Zhou Dynasty are obviously traces written with a soft pen tip. From the shape and meaning of the characters, we know that the writing tool, namely the writing brush, has a variety of ancient writing brushes and related writing utensils in the Chu tomb of the Warring States period unearthed in Zuojiagongshan, a suburb of Changsha, Hunan Province. This is the first time we have imagined the image of a brush before the Han Dynasty, which really looks like a big picture. The brush in this batch of cultural relics is called "Changsha Pen", which is made of high-grade rabbit hair. Hair length is 2.42 cm, pen tube 16.6 cm. The pen holder is made of fine bamboo. The manufacturing method is to insert the rabbit hair clip into the tube end, tie it with filaments and fix it with paint. This work is quite superb in technology.