This piano is tuned in that part of the piano.

Piano tuning is mainly to tighten or relax the strings of the piano and adjust the melody, so as to achieve a certain timbre effect. Piano tuning is a normal phenomenon and a complicated work. It is recommended to find a professional to tune the piano instead of trying to tune it yourself. The pitch of piano will change with the change of climate, but the change of pitch will be later than the change of climate. The temperature and humidity changes of the temperature throughout the year have a great influence on the piano pitch, so after several weeks of climate change, the piano pitch will be kept for a long time in spring, summer and autumn until early winter.