Regular script is the most common and popular font in China's ancient calligraphy, and it is also one of the most commonly used fonts in China's classical literature. Its origin can be traced back to the Han Dynasty, but it reached its peak in the Sui and Tang Dynasties and became the basis of later calligraphy. Regular script is characterized by straight strokes, regular structure, stable writing and clear, dignified and neat aesthetic feeling. It plays an important role in the inheritance and writing of China's classical literature, and is widely used in various literary forms such as classical literature, ancient books, inscriptions and letters.