The correct way to write: press from the top left to the bottom right, and the direction is basically 45 degrees. Take the horizontal line as an example: pen-pen to the right-pen (back and forward). The first stroke is to press down to the right in the air (volley means that the pen tip has started to run in the air before touching the paper), and the second stroke is to press down directly to the right when closing the pen. Although there are pauses and presses when using the pen, the whole stroke writing process should be coherent, which seems to have three steps. In fact, it is done in one go, and only one beat is needed after proficiency. At the same time, the echo of the pen should choose the appropriate angle according to the next stroke, which can sometimes be ignored.