Jumping bow is a bow technique that uses the bouncing power of the bow to play a short and elastic jumping sound. It is divided into two types: controlled jumping bow and natural jumping bow. The control of the jumping bow is mainly controlled by the movement of the forearm, and the wrist and the fingers cooperate accordingly. After the bow hair is rubbed and the string is pronounced, it quickly jumps up and away from the piano barrel, making the pronunciation short and powerful. When playing, the wrist should control the bow well, and the "axis" of its forearm movement is at the elbow, making the bow jump up and down between the two strings. The control jumping bow is often used in combination with other bowing techniques in music. Even if it is used alone, it is limited to the range of a few bars, and it is rarely used continuously for a long time.

When playing and controlling the bow, pay attention to the close coordination of the forearm, wrist and hand. When the bow jumps out of the piano barrel, the arms, wrists, and hands must relax quickly, allowing the bow to fall back to the piano barrel freely, so that the effect can be short, clean and elastic. To avoid the movement is too tense, resulting in a bad tendency to rigid pronunciation.

The natural jump bow is a sister bowing method of the fast bow. Its symbol is "▽", which is written above the note (sometimes it is not marked, and the player can freely choose to use the natural jump bow or the fast bow). It is one of the erhu. A difficult technique. It is said that it is the sister bow of the fast bow, because the difference between the natural jump bow and the fast bow is only the difference in the wrist movements in the playing method. Secondly, in the use of music, they can be replaced and transformed with each other. But it is also a very difficult skill. If you don't have a good foundation for fast bowing and you can't master the dexterous wrist movements, it is difficult to play the natural jump bow well.

So, what is the difference between the natural jumping bow and the fast bow and the stun bow? The difference between the pronunciation of the natural jump bow and the fast bow is: the pronunciation of the fast bow is in the shape of a line segment (- - - -), while the pronunciation of the natural jump bow is in the shape of a point (. . . .).

The difference between it and the ton bow is that the hop bow sound is shorter and more elastic than the ton bow sound.

In addition, the fenton bow is generally used in medium and slow music, while the natural jump bow is mostly used in fast music. Although the speed of the Lianton bow is also very fast, it usually only plays one bow and cannot be used in large sections, while the natural skipping bow has no limit on the length of the section.

The natural jump bow is generally used in the outer string, and the natural jump bow with the inner string is rarely used because it is difficult to control and the pronunciation is not ideal. The way to play the natural jump bow is: the right index finger, middle finger and thumb control the bow. If the bow hair is loose, you can use the stacking method (that is, the ring finger can be stacked under the middle finger) to tighten the bow hair, or adjust the bow hair to a slightly tight state in advance. Choose the best bounce point for your bow. The bouncing point is determined according to the speed of the music. The faster the speed, the closer the bouncing point is to the tip of the bow. On the contrary, it is closer to the middle bow, generally in the left quarter of the bow. Lift the bow slightly away from the barrel and relax your wrists. The movement of the forearm is the same as that of the fast bow. The "axis" of the movement is placed in the middle of the forearm, the forearm is driven by the big arm, and the wrist is shaken by the movement of the "axis". Because the wrist is very loose, the amplitude of the hand swing is greater than the amplitude of the forearm movement, so the bow moves in a "∧∧∧∧" shape. In this way, the moment the bow is drawn, the bow hair and the string are in contact and rubbed to produce sound. Afterwards, due to the swinging of the wrist, the hand loses the support force on the bow in the original direction during a short arc movement, and the bow bounces off the strings under the action of its own elasticity. The wrist is swung over again. When the hand and the forearm are in a vertical state, the fingers exert a supporting force on the bow again, causing the bow hair to rub against the string for the second time and make a sound. Repeating this cycle, the bow will beat evenly between the two strings, resulting in short, even rapid beats.

Next, let's take a look at the differences between the natural jump bow and the fast bow in performance.

The difference in playing methods between the natural jump bow and the fast bow lies mainly in the movement of the wrist. When playing the fast bow, the right wrist should be controlled a little, so that it only acts as a buffer between the forearm and the hand, so that the fast bow action will not be stiff, so the wrist movement is not large, and the forearm strength should directly reach the fingers. . But when playing the natural jump bow, the right wrist should be very loose, like the connecting ring of the three-section stick used in martial arts, so that the forearm and the hand become two parts connected by the connecting ring. In this way, the forearm is driven by the big arm, and the wrist is shaken by the action of the "axis", so that the hand moves in a large arc, so that the bow can jump up.

Then, by adjusting the tightness of the wrist, you can freely switch between the fast bow and the natural jump bow, or in an intermediate state, that is, a half-jump state. Due to the limitation of the force and the range of the bow in the natural bow, when a fast piece has a large change in intensity, it usually starts with the natural bow and gradually transitions to the fast bow. Or the other way around, start with the fast bow and work your way up to the natural jump bow. There are also two natural jump bows, and the middle is a fast bow. Or the two ends are fast bows, the middle is a natural jump bow, etc. In short, the use of these skills must be adjusted in time according to the needs of the content of the music to meet the performance requirements. To meet this requirement, different techniques can be used freely in the music.

Playing the natural bow is to pay special attention to the following two points:

1. The wrist is only allowed to move left and right, without a slight up and down movement.

2. The bow hair must beat inside and outside the two strings, but not up and down.