The original imitation Song characters were all square, with the same height and width. In order to meet the needs of vertical and left lines and text annotation, Ding Fuzhi also designed a long imitation of Song characters, which are three high and two wide, slender, thin, hard and delicate. The words in brackets are lowercase, arranged two lines more than the text, which not only enriches the layout, but also has obvious differences from the text.

The birth and perfection of imitation Song coincided with the influx of western science and technology into China. The technical achievements of machinery, architecture, bridges, railways and other majors need a large number of design drawings to express, and imitation of Song has become the first choice for writing Chinese characters on drawings.

The imitation of characters in Song Dynasty is easy to write with a pen, and its dignified, neat statutes and strict norms undoubtedly express the content of characters, further highlighting the seriousness, scientificity and authority of technological achievements.