In your question, I just said some signatures and your question. In fact, the biggest question should be whether you are satisfied with the quality of the violin you bought, what is the material of the violin, how many years of dry materials, the quality of the paint, the production process, the timbre of the violin, whether it is penetrating, whether it is feminine, whether all ranges are balanced, whether the pronunciation responds quickly, whether the pronunciation is pure without noise, and whether the so-called handmade violin is mixed. Good quality is very scarce. It is much more difficult to buy a satisfactory violin than to find a girlfriend, and some ask too much. The most important thing about the violin is that its performance is very good. Beautiful timbre, soft but not weak, penetrating without harsh noise, fast sound speed, clear and grainy. I suggest you show the violin to an expert and show it to a master for identification. Don't buy tens of thousands of violins if you don't know how to identify them. To tell the truth, even the best violin can only be made by violin masters. Unfortunately, many violin lovers have worked hard, and some have even studied for decades, but they have never mastered the basic skills of violin. Their arms are stiff and their pronunciation is stiff. Therefore, many people say that learning violin should start from primary school and require children's skills. I admit that children's skills are needed, but if you know how to train the flexibility of your joints and muscles and work hard, you must master the basic skills of the violin. The old lady can practice yoga well, which shows that as long as the method is correct, hard training can also be successful.