It has always been highly respected, regarded as "authentic regular script" and "the best regular script in the world" by later generations, and it was Ou Yangxun's masterpiece in his later years. This work can best reflect Ou Yangxun's style-Yuping is in danger, with strict structure and strict statutes. Many people learn European style from this monument, but it must be said that Ou Yangxun's understanding and mastery of the structure is enough to deter many calligraphy lovers. Therefore, it is difficult to study the inscription of the ritual spring in Jiucheng Palace. Regular script, a font of Chinese characters, is also called regular script, regular script, original script and regular script. It gradually evolved from official script, becoming more simplified and more horizontal and vertical. The book Ci Hai is interpreted as "square in shape and straight in brushwork, which can be used as a model". This kind of Chinese character has the correct font and is a modern popular handwritten orthographic Chinese character. Regular script is also the official name.