There is also Wang Xianzhi's Ode to Luoshen, which is called "the best in lower case" by later buddhas. Ou Yangxun's Heart Sutra, with Ou Yangxun as the earliest representative of regular script, uses a sharp pen, combines rigidity with softness, is very organized and has a neat font.
The use of regular script is more complicated, and both the beginning and the end of the pen need to pause, except for oblique strokes.
When writing regular script, the pen is independent, the characters are independent, and they are arranged neatly, and there is not much connection between them.
Regular script is the most commonly used font in calligraphy now, which evolved from official script in Han Dynasty. The structure of regular script is regular and square, horizontal and vertical, followed by cursive script and running script, which is more free than regular script.
Regular script was very prosperous in Tang dynasty, when the font of regular script was mature. Calligraphers such as regular script appeared in the early Tang Dynasty, Yan Zhenqing in the middle Tang Dynasty and Liu Gongquan in the late Tang Dynasty. Their works are exemplary.