What is the biggest difference between Yan Ti and Liu Ti in calligraphy?

The inkstone body was created by Yan Zhenqing, a calligrapher in the Tang Dynasty. Together with Liu Gongquan, it is called "Yan Liu" and "inkstone Liu Jingu". "Yan Ti" is aimed at Yan Zhenqing's regular script. Its regular script structure is square and dense, the strokes are horizontal and light, the brushwork is vigorous and round, and the momentum is solemn and vigorous. His cursive script is concise and powerful, with ups and downs.

Liu Ti is an artistic style of calligraphy formed by Liu Gongquan.

Liu Gongquan was the last great calligrapher in the Tang Dynasty and one of the four masters of regular script (Ou Yangxun, Yan Zhenqing, Liu Gongquan and Zhao Mengfu). Wang Xizhi, a beginner in calligraphy, later studied modern calligraphy, studied under Yan Zhenqing, absorbed his new ideas, and then got married and created his own unique Liu style, which is a model for later generations. His handwriting is even, thin and hard, and he pursues Wei Bei firmly. His stippling is crisp and beautiful, with thick bones and tight body. "Books are expensive, thin and hard, and the spirit is clear." Compared with his face, his regular script is slightly flat and thin, so it is called "Yan Gu".