Chinese characters developed to the stage of Xiao seal script, and gradually began to shape (outline, strokes, structure). The pictographic meaning is weakened, which makes the characters more symbolic and reduces the confusion and difficulty in writing and reading. This is also the product of the first large-scale use of administrative means to standardize writing in the history of China. The Qin Dynasty unified the national characters with the sorted seal script, which not only basically eliminated the phenomenon of different lines of characters in different places, but also greatly changed the situation of different fonts in ancient Chinese, and played an important role in the development history of China characters.
Extended data:
After Qin Shihuang unified China (22 1 year ago), Xiao Zhuan implemented the policy of "writing is similar, cars are on the same track", and Prime Minister Li Si was responsible for the unified measurement. On the basis of the original script of the Qin Dynasty's Da Zhuan, Xiao Zhuan simplified it, canceled the other six scripts, and created a unified Chinese writing form. It was popular in China until the end of the Western Han Dynasty (about 8 AD) and was gradually replaced by official script.
References:
Xiaozhuan-Baidu Encyclopedia