(1) "The python skin of the large scale flower is better than the python skin of the small scale flower" --- This is one of the misunderstandings. In terms of acoustics, the standing waves formed on the skin of the rhinoceros contain richer low-frequency components, so generally speaking, the erhu of the rhododendron skin is thick, but the sensitivity is lower, and the pronunciation of the high position is relatively thin. , the volume is low. The small scale flower python skin can accommodate more high-frequency components from the acoustic principle, so the sound is clearer, the sensitivity is better, and the high-position pronunciation is fuller. Of course, the above problems are also related to the thickness of the python skin and the tightness of the skin. Therefore, it is not necessarily good for the large scale flower.

(2) "The surface of python skin is oily and shiny better" - this is the second misunderstanding. Generally speaking, the skin of the mature python that has not been stored for a long time has a better surface gloss, while the skin of the old python is less glossy, and the skin of the python that has been stored for a long time also has a lower gloss. However, the oiliness in the python skin will affect the sensitivity of vibration, and the sound will be more "stuffy". But the oily, shiny skin of the python has a longer lifespan and is more promising.

(3) "The symmetrical pattern of the python skin is better" - this is the third misunderstanding. This is a false rumor that has no theoretical basis and no practical test. It can only be said that the python skin with symmetrical pattern looks better. As long as the scales are basically uniform in size, it doesn't matter whether the pattern is symmetrical or not.

(4) "Red sandalwood is better than mahogany" - this is the fourth misunderstanding. Generally speaking, the red sandalwood erhu has a stronger and brighter sound, while the mahogany erhu has a softer and more rounded sound. In fact, the key issue is the degree of drying of the wood. The oiliness and moisture in the fibers of the wood with good air-drying degree are removed, the wood becomes "transparent", the transmission impedance of sound waves in the wood is small, and the vibration is thorough, so the resonance is good, the sound is transparent, and the pronunciation is sensitive. In terms of material, red sandalwood is denser than mahogany, so it is more difficult to lose its oiliness. It takes hundreds of years to make the wood transparent in a natural air-drying environment. Due to the rarity of red sandalwood, the real old red sandalwood is probably nowhere to be found. Relatively speaking, there are many sources of old mahogany (such as mahogany furniture in Ming and Qing Dynasties). So looking for a good old mahogany erhu is much more realistic. The new red sandalwood tone is unsatisfactory.

(5) "The more expensive the better" - this is the fifth misunderstanding. Some Hu friends insist on buying red sandalwood when buying erhu. If the price exceeds 5,000, in fact, there is a gimmick of the merchant. There is no need to buy such "high-end" ones.

Erhu is for listening, not for watching. A good erhu should "sound" good, not "look" good. Looking at the appearance of the erhu is only the first step in choosing an erhu. The key is to try and listen. "Listening" to the quality of an erhu, the difficulty lies in the fact that none of the new erhus have been turned on. The erhu has to be pulled open to reveal its true color, and it takes experience to predict the tone of a new erhu when it is pulled open. accumulation, which is difficult.