The cracking of the woodcut and the opposite result of the floor caused my first question. We often see how many years the board of a certain violin has been dried and stored. So, what is the temperature and humidity in the warehouse? Is it like the insulation layer on the roof or like the garage at the bottom of the building? Is it piled up or completely fictional? Is the ventilation good? Is the temperature and humidity constant? …….

The cracking of the woodcut and the opposite result of the floor make me think of the violin, which is the "original temperature and humidity" when the violin is closed and the "instant temperature and humidity" when stored. Are they the same? Is there a big gap? Will it come loose or crack? Will the sound quality deteriorate significantly? …….

I thought that any violin would have different timbres at different stages of production, storage, and use, as well as under different environmental temperatures and humidity. I will temporarily refer to the environmental temperature and humidity during the process of combining violins in a violin workshop as "combined temperature and humidity" or "original temperature and humidity"; The temperature and humidity of the environment during the testing of the violin workshop after painting, installing the sound column, bridge, strings, and other accessories are called the "completion temperature and humidity" (which can also be basically considered as the "original temperature and humidity"), and the initial sound is called the "original sound".

Then, the environmental temperature and humidity that go through inventory, transportation, sales, piano store display, courier delivery, hands-on piano testing, readjustment, collection and storage, piano practice, performance, and other processes are collectively referred to as "real-time temperature and humidity", "transportation temperature and humidity", etc., and the tone is called "real-time tone". These "temperature and humidity" and "timbre" are always variables that constantly change with climate and conditions, including practitioners and performers. Even in my experience, even without changing any conditions, a piano that has just been adjusted (such as the sound column or the bridge) will have one tone, and after being played for half a day or a day, it will have another tone. The violin itself is also adapting and adjusting.