The left hand holds the piano with a "tiger's mouth" and rides on the piano bar, the thumb is slightly bent, and it should not be lifted up vertically, nor should it be bent down to squeeze the piano bar tightly. The palm should be suspended, and the contact area between the tiger's mouth and the piano rod should be minimized, which is conducive to the accuracy of finger pressing, and also conducive to the agility of changing the handle or practicing other skills. The entire left hand should be relaxed, and the forearm should hang down naturally, forming an angle of about 45 degrees with the piano bar. Some beginners tend to raise their arms so high when they hold the piano that the entire left hand almost forms a plane with the shoulders. This is not only unsightly, but also the arm is in a rigid state. It is very passive and rigid to press the strings and change the handle, and it is difficult to improve the fingering technique.

The shape of the hand holding the bow in the right is similar to "holding chopsticks", and the basic principles are also somewhat similar. The entire right hand should neither be tense nor slack. The specific hand shape for holding the bow is: the wrist is naturally flat, the palm is turned to the left, the five fingers are slightly bent, the index finger and thumb are pinching the bow shaft at the root of the bow, the middle finger and ring finger are juxtaposed between the bow hair and the bow shaft, and the little finger is placed on the bow. underside of the hair. The thumb and index finger mainly pull the bow to run left and right, and master the balance of the entire bow. The middle finger mainly pulls the outer string of the bow rod, and the ring finger mainly buckles the bow hair and pulls the inner string.

Of course, the middle and ring fingers are placed between the shaft and the bow hair, just for the general case. If you play fast bows, broken bows and other bowing skills on the outer strings for a long time, it is better to temporarily withdraw the closed ring finger, and the right hand of the whole bow appears more flexible and free. However, there are some beginners who, regardless of the specific situation, are accustomed to leaving only the middle finger or ring finger between the bow shaft and the bow hair when holding the bow, and the inner and outer strings are all done with this finger. There are obvious traces of such a string change, and the pronunciation is blunt.

Although some beginners insert their middle and ring fingers between the shaft and the bow hair. However, the bow holder has been moved closer to the middle of the bow, which greatly wastes the fully usable bow. According to the principle of leverage, the shorter the power arm, the harder it is to pull up. Moving the bow holding point to the left is equivalent to shortening the power arm, which hinders the full play of the erhu playing technique.

When practicing the piano, you should also pay attention to developing good playing habits. When playing, the movements should be agile and accurate, the manners should be full and neat, and the expressions should be natural and generous, and efforts should be made to help the audience understand the content of the music through the performer's skilled performance movements and appropriate facial expressions, so that the performer's piano sound and the audience's sympathy. Heart sounds resonate. But don't make a fool of yourself, or lean forward and backward unconsciously, and you are moody.