Raw Xuan ink spreads too fast and can be written in print, but cooked Xuan ink is difficult to absorb on paper and has not been made for a long time.
Xiao Kai, as its name implies, is a minor in regular script, which was founded in Zhong You of the Wei Dynasty in the Three Kingdoms. He is the most outstanding authoritative master of official script, and his writing style of regular script was born in Han Li, which is very vivid. However, the structure is wide and flat, the horizontal painting is long and the vertical painting is short, and the legacy of official division still exists. However, the model method is ready, and it is actually the ancestor of the official book. When Wang Xizhi came to the Eastern Jin Dynasty, he studied the lower case calligraphy more carefully and made it perfect, which also set a good appreciation standard for China's lower case calligraphy.
The classic works in lower case are: Zhongyou declaration form and recommended season direct form; Wang Xizhi's theory of Huang Tingjing and Yue Yi; Wang Xianzhi's Thirteen Odes to Luoshen, etc.
Generally speaking, writing small characters is very different from writing big characters. In principle, writing big characters should be close and seamless, and writing small characters should be more spacious. In other words: writing big characters should be as accurate as writing small characters; And writing small characters should be like Shu Lang, so the ancients said, "Writing big characters should be like small characters, and writing small characters should be like big characters." In Su Dongpo's essays, there is a fine saying that "big characters are hard to be seamless, and small characters are hard to be generous".