What's the name of the piano and drum with national characteristics in Japan?

Hello, I've heard of pianos with Japanese national characteristics. It's a three-stringed instrument, and there is a very famous one called "Tianjin Light Sanwei Line".

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About drums, I don't know what kind of drums you are talking about. Ordinary drums are called "Taigu", and some drums are called "ちぢん". "

I didn't pay attention to these, I can only give you these answers.