You usually need to use both sides together. Engrave names and numbers at the same time; Or a surname and a name. Carve Zhu Wen and Bai Wen at the same time.
When used, Zhu Wen is light red and used on it; Bai Wen is red and heavy. Put it down. The size of the seal is about the same as or slightly smaller than the inscription. The position of the seal, if there is more space under the signature, can be covered under it, if there is less space under the signature, it can be covered around the handwriting.
The distance between two seals is approximately equal to the position of one or two seals, and it is not allowed to be too open or too crowded.
Extended data
Name and font seal: generally stamped under or around the author's name. Zhai Guan and Tang Hao usually affix their seals around or below the words, which are also used to say hello, and cover them in the upper right corner.
The seals of articles, auspicious words and aphorisms are generally covered in the lower left corner of calligraphy and painting as chess pieces and greetings. Collecting and appreciating stamps are generally covered on the left and right corners of calligraphy and painting, or they do not hinder the blank space of calligraphy and painting works themselves, and can also be covered on mounting other than calligraphy and painting. The most conspicuous position of calligraphy and painting also has a cover to show authority, such as Qianlong and Jiaqing Emperor.
Rectangular seals, which we call flat seals, are usually covered in the upper right corner of paintings and calligraphy. Printed content is often casual articles, auspicious words, aphorisms and the like. There are also round or oval chapters.
Baidu Encyclopedia: Seal