Few teachers can seriously talk about the structure of the piano now.
I don't know the Guqin teacher in other places, but I personally recommend Liulichang (15 road to get there. I am a road idiot. I wonder where Liulichang is. If it is too far from your home, I will automatically ignore this answer)
Liulichang has enjoyed the appreciation of Qin, Qi, calligraphy, painting and antiques since the Qing Dynasty, but good teachers are hard to find, and some stores have poor environment. If you go there, you may find some famous teachers (I happened to meet my current Guqin teacher ... ⊙⊙⊙⊙B Khan when I was wandering there looking for a toilet).
This piano is not very expensive. A lesson of 80 yuan takes about 1 hour, and it is enough for beginners to buy a piano of about 1 0,000.
Since it is a personal hobby, spend more time looking for some fairy tales about the origin of Qin. The more you know, the more you will like it in the future.