楷书 (Kǎishū), also known as "Regular Script," is a style of Chinese calligraphy that emerged during the Han Dynasty. It is characterized by its clear and structured strokes, making it one of the most widely used scripts for writing Chinese characters today. Kǎishū is often taught to beginners due to its legibility and systematic approach. This script is essential for formal documents, books, and educational materials. Its balanced proportions and distinct features allow for easy reading and writing. Kǎishū has influenced various other styles of calligraphy and remains a fundamental aspect of Chinese writing culture.