A little longer, you can explain the date, such as Chu Suiliang's Preface to the Big Wild Goose Pagoda: Yonghui was four years old and ugly, and on December 10th, Wuyin New Moon, Ding Haijian, the right servant of Shangshu, shot a letter from Chu Suiliang, the founding minister of Henan County.
If you write two paragraphs, the receiver should be at the front and the writer should be at the back. This is a way to show respect.
For example, Zhao Mengfu's "Two Poems on Red Cliff" has two paragraphs: on the eighth day of the first month, I used this paper to ask for two books, and I took Dongpo as the frontispiece, which made me proud.