Guqin cracked in the north, how to maintain it?

The weather in the north is relatively dry, and the piano in the south can't stand it, and the paint on the piano surface is easy to crack. It is best to buy a bottle of Bellevue (yellow) for cleaning musical instruments, or white vaseline. Rub Bellevue (white vaseline) protective paint on it after practicing the piano. Don't expose the guqin to the sun. Guqin is the most dry, so handle it gently.