1. Center pen: It should be understood as making the pen perpendicular to the paper, so that it can move freely in any direction, which is the so-called "eight-sided attack" brushwork. How can we be "besieged on all sides"? This requires that the pen must be held straight before it can move to the "eight sides" (up, down, left, right, left, right, left and right). Second, we must learn to use a pen. What's a nib? The tip of the brush is the most elastic part of the brush, at the tip of the brush. This action is the most flexible and the lines written are the most elastic. After writing one line at a time, the brush will return to its original state and you can write freely. It's like walking with the thigh driving the calf to swing forward freely, alternating left and right, and it's easy. If you squat down, your legs are bent, and you will walk hard, hard and unsightly. This is the same as the pen used in the center, but the special pen is another matter.
2. Side pen: As the name implies, the pen tip is horizontal, which means that the pen is not perpendicular to the paper. In order to achieve special artistic effects, it is necessary to master the pen for side attack. This technology is developed from "pen-centered", that is to say, after mastering "pen-centered", we can learn and study "pen-centered". It can be said that the technique of "pen as the side" is higher and more difficult. If it is used well, it can add luster to the posture, but if it is not used well, it will be self-defeating. According to the shape of the pen on the supply side, it can be divided into: (1) a pen with an inclined pen, and the pen holder is inclined to the inside of the pen body (writing horizontally); The pen holder leans to the right (for vertical painting). (2) "straight pen", the pen is used in the abdomen or heel of the pen, which is also a sideways posture. The ancients called it a "writing brush". I hope it will help you, and you are welcome to ask for help if you have any questions.