Describe the layout of the ancient book Huai Nan Zi, as shown in the figure.

This is Shen's old collection, also known as "Yiyanlou".

In the 9th year of Jiaqing in Qing Dynasty (1804), Baoqing Jinglun Hall was reprinted, with eleven lines and twenty-one characters, and the fine print was double-line and single-column.

(Note: Darkmouth or Bai Zui need to see the original, but the pictures are not available. Write a blank for the time being )