When lifting a pen, if the pen tip stays at the stippling place of the word, it is called "center"; Hiding in the middle of stippling and not leaving Guijiao is called "Tibetan Front"; If the pen tip is biased towards the lettering side, it is called "biased". It is generally believed that "skew" is a disease of calligraphy.
The elasticity of the brush itself is determined by the "front". The longer the front, the stronger the elasticity; The longer the front, the fuller the ink content; The stippling written is smooth and smooth. Of course, the pen is straight when you lift it, and it falls off when you press it. Another example is the frustration of stippling, the interlacing and connection of words, etc. These are the functions of the "front desk".
Extended data:
Brush strokes and brush strokes are a whole and two concepts. A high-quality brush must have two elements: one stroke and one painting. Generally, high-quality pens have both excellent bristles and high-quality tips (glumes), such as equal outer hairs, secondary hairs and waste hairs. It can also be made into a writing brush, which looks like a writing brush from the outside, but actually has bristles and no nib.
The role of brush tip in writing is very important. For example, in the process of writing, you can use the center, flank and exposed front to rotate freely, and you can lift the pen according to the pen without falling back and scattering the front, all of which can be done by the pen front. Twist the front edge of the pen tip by hand, pinch it flat, and then look at it in the sun or light. There is a relatively transparent and glittering part, that is, the nib, referred to as the leading edge.
References:
Baidu encyclopedia-pen feng