Article snapshot taken from Wikipedia with creative commons attribution-sharealike license.
Give it a read and then ask your questions in the chat.
We can research this topic together.
When Song lost control of northern China to the Jin dynasty (1115–1234), its capital was moved to Lin'an (modern Hangzhou), where there was a revival of printing, especially literature from Tang left in what was conquered by the Jin dynasty. Many publishers were established in Lin'an, including Chén zhái shūjí bù (陳宅書籍鋪) established by Chen Qi (陳起), from which publications used a distinct style of regular script with orderly, straight strokes. Modern typefaces of this style are classified as imitation Song typefaces.