How to write vertically?

Chuilou, pronounced as chuí lù, is a Chinese character and calligraphy term. A form of writing and painting. Its pen is like dew hanging down, hence the name. It is different from the "hanging needle" because its front is hidden.

Whether the pen is square or round, the method of collecting the pen is the same. The common way is to "pick up the pen from right to left and then collect it", and another way to collect the pen is to "pick up the pen from left to right". The direction of vertical painting involves the situation of vertical painting and the consistency of brushwork. The closing direction of vertical painting must be related to the beginning of the next stroke. If the starting point of the next stroke of vertical painting is on the left side of vertical painting, the closing stroke of vertical painting should be from right to left; If the starting point of the next stroke of vertical painting is on the right side of vertical painting, the strokes should be collected from left to right, so that the strokes can echo each other.