The basic knowledge of music theory needed to learn guqin.

If you are good in Shanghai, you can buy Ma Qin (Yangzhou Ma Wei Heng), and 3000 to 5000 is enough for beginners. It's not too difficult to buy. After all, there are many good Guqin teachers in Shanghai, and you can also book big musical instruments. Just asking.

Guqin uses subtraction notation, usually accompanied by simplified notation. The staff is completely useless. But because the fingering is too complicated, you can't even understand the notation without the teacher's guidance, let alone the complicated fingering with your left hand. If it is difficult to teach yourself, even if you have the foundation of guzheng, it is of little use (except for rhythm and overtone, I think so), because the piano is caressing and the guzheng is playing.

Learning guqin well really needs a strong ideological consciousness ~ ~ ~ so those who have no perseverance should give up. After all, the big class of guzheng can't achieve results in one semester, nor is it popular. Of course, you should at least have a little interest and understanding, so as not to get bored as you learn. You should also be prepared for grinding calluses and bleeding fingers, and practice regularly (once or twice a day as usual), otherwise it is useless to buy a piano.

Having said that, I still hope the landlord will become my colleague. Of course, guzheng is also good.