For those who love erhu, the opening of the erhu is an indispensable part of the performance career and a key step to improve the sound quality of the instrument. The essence of Kaiyin is to make the sound color of the erhu more pure, pure and bright through persistent training and meticulous tuning. Below, I will give you a detailed introduction to how to make the first opening of the erhu for beginners. 
Before you get started, please make the following preparations:1Inspect the erhu's barrel and skin parts to make sure they are not damaged or cracked, as these imperfections may affect the effect of the opening tone. 2.Check that the bow is firm and that the bow hairs are neat and orderly. If any damage or looseness is found, replace or adjust it immediately. 3.Prepare some necessary sounding equipment, such as wrenches, screwdrivers, etc., in case of special situations that may arise. 
Next is the specific process and key points of the opening sound: 1Adjust the strings: Start by adjusting the strings and gradually tighten the strings using tools such as a wrench until the appropriate tension level is reached. In this way, the strings can be fully oscillated to produce a crisp and loud sound. 2.Adjusting the bow: Adjusting the tightness of the bow is a critical step in the opening process. If the bow is too tight, it may hinder the full vibration of the strings, resulting in a fuzzy tone;If the bow is too loose, the performance will also be affected. Therefore, it is necessary to adjust the tightness of the bow according to individual playing Xi and the quality of the bow. 3.Practice Xi playing: After you have finished tuning the strings and bows, you can choose the appropriate Xi repertoire to practice. In this process, the following points need to be noted: in the initial opening phase, you should avoid choosing too complex movements;Maintain good playing posture and gestures;As the Xi time and intensity increase, the strings need to gradually adapt to the change in tension. 
4.Adjust the barrel and skin: During the Xi process, you should also pay attention to adjusting the tightness of the barrel and skin to ensure that they can achieve the best vibration state. If the barrel and skin are too tight or too loose, it will affect the purity and clarity of the tone. Therefore, it is necessary to make precise adjustments according to factors such as individual playing Xi habits and the quality of the barrel and skin. 5.Countless practice and debugging: Pitching is a long and arduous process, which requires repeated practice and fine tuning to achieve the best results. After each training, it is necessary to summarize and analyze and give feedback in a timely manner, and make appropriate adjustments and improvements according to the actual situation. Only through continuous experimentation, pondering and adjustment can the sound of the erhu be more pure, clear and gorgeous. 
In short, making the first opening of a newly purchased erhu is a process that requires patience and care. In this process, we need to pay attention to every detail, constantly practice Xi and adjusting, in order to create a perfect instrument and produce the best sound.