What does it mean to press the left and right width when writing?

Left-right width is the writing requirement of left-right structural characters in hard pen calligraphy. In most cases, we usually write words with left and right structures, which are narrow on the left and wide on the right, that is, about one-third on the left and about two-thirds on the right. This is because most of the main pens are in the right part, so the right part takes up a larger proportion of space. To sum up, when we write, we should look at the horizontal strokes of the left and right parts. If there is no right on the left, try to write that the left is wide and the right is narrow. If there is no right on the left, we should write that the left is narrow and the right is wide.