Lifting the pen and pressing the pen are key in running script. Pressing the pen: One of the calligraphy strokes, which is opposite to "lifting". Refers to the downward movement of the pen in a vertical direction. Lifting the pen refers to the movement of using the pen upward in the vertical direction. As long as people who study calligraphy realize the true meaning of the word "Ti Jian", they will enter a wonderful realm. The pen should be lifted briskly (Feiti, that is, the pen is lifted briskly) in the important places, and the pen should be pressed firmly in the light places. In this way, the written words will not be rigid and frivolous, but will be flexible and vivid.