The Chinese calligraphy can be traced back to the Dazhuan (large seal script) that appeared in the Zhou Dynasty. After Emperor Qin unified China, Prime Minister Li Si collected and compiled Xiaozhuan (small seal) style as a new official text. The small seal script is very elegant but difficult to write quickly. In the Eastern Han Dynasty, a type of script called the Lishu (Official Script) began to rise. Because it reveals no circles and very few curved lines, it is very suitable for fast writing. After that, the Kaishu style (traditional regular script) has appeared, and its structure is simpler and neater, this script is still widely used today.