Vertical format and signature of hard pen calligraphy

According to the length of the content, the signature can be divided into long paragraph, short paragraph and poor paragraph, and the poor paragraph only refers to the author's name. According to the position, it can be divided into the previous paragraph and the next paragraph. The first paragraph is written on the right side of the work, and the content is generally written as "the kindness and elegance of so-and-so" or "to Mr. so-and-so", while the next paragraph is written on the left side of the work, and the content is generally the author's name, writing time and place.