1, double paragraph: double paragraph refers to placing the calligraphy addition object and the writer above and below respectively, with the former as the upper paragraph and the latter as the lower paragraph. The name, source and the name of the donee of the work shall be stated in the preceding paragraph. The next paragraph describes the date, place and author's name of creation.

2. Single segment: Single segment can be divided into long segment, short segment and poor segment. A long paragraph is to write the time, name and place in the text, plus the author's feelings or reasons for creating this work. Generally used to supplement the rules. A short paragraph only includes the source, time, name and place of the text. Generally speaking, the lettering used for inscriptions is official script, regular script is not official script, and cursive script is not regular script. If there is not enough paper and too little space, you can only write the author's name. This kind of signature is called "poor money".