The correct principle of bowing is: "flat, straight, uniform, solid" four essentials. Incorrect bowing is the four key points of "raising, hanging, hanging, and swinging".

Flat: The ponytail is always in close contact with the piano barrel and the piano rod. The movement of the bow should be stable, and it should not be up and down. Raise your right hand too high when drawing the bow, so that the ponytail is off the barrel. When the bow is pushed, the right hand is pressed too low, causing the bow tip to rise. The other is that when the right hand holds the bow, the bow rod touches the strings and the bow rod touches the piano barrel. Not only does it cause wrist tension, but it is also prone to noise. Correct bowing should always be at a 90-degree angle between the ponytail and the strings.

Straight: When bowing, the ponytail is in a straight line, do not swing in and out, whether it is a pull string or an outer string, the ponytail cannot leave the strings, stems, and barrels during operation. Especially when pulling the strings, you must not be too far from the piano bar. Whether the bow is in a straight line can be clearly seen by looking at the friction surface of the rosin.

Uniformity: It means that the speed and strength of the whole process of moving the bow should be uniform. It should not be fast or slow, strong or weak. The bow should be drawn and pushed smoothly and evenly, and there should be no noise. It should be mastered from the root to the tip of the bow. One strength, there is a kind of breath in it, we should say it is a kind of static qigong when we move the bow, the breath runs through the whole body, especially the right hand, just like writing calligraphy. As with bowing, the skill of the right hand is enhanced, and it will naturally be even and powerful.

Reality: The sound of the bow is pure and firm. The bow of Jinghu is different from the bow of other string instruments. The most obvious difference is that the ponytail is close to the piano bar. Especially when pulling the outer strings, the right hand must exert force outward. The fingers hold the three points of the bow, the strings, and the piano rod to form a kind of leverage. However, you must master the degree and find its optimal saturation point, and you should not use too much force. , if you use too much force, you will recite it. When pulling the strings, in addition to not leaving the piano rod, the right thumb, index finger and middle finger should pinch the bow rod, and the most important thing is to hook the ponytail inward with the ring finger, so that the sound will be pure. Thick and solid.

The four key points of "ang, hanging, hanging, and swinging" are: flat, straight, even, and solid. What are the four key points of "ang, hanging, hanging, and swinging?" On the premise of being straight, even and solid, it is possible to easily and freely emit a high, crisp, full and round tone. This is the biggest feature of Jinghu.

We can do a few exercises, long bow, that is, slow bow, 2 2 5 5 The movements of the big arm, forearm, and wrist should be coordinated, like a fish waving its tail, but it should not be too big, it will cause a broken wrist , also known as "kowtow to the wrist", the big arm should not be too big, it is wrong to go out the elbow first. It is also wrong to have no wrist. It is very important to master the degree of "dead wrist".