Hello,
I'm selling two classic problems books.
Guanzi Pu (in chinese), ISBN 7-80548-477-5
https://senseis.xmp.net/?GuanziPu
Gateway to All Marvels (in korean), 4 small volumes, ISBN: 89-88847-18-0
https://senseis.xmp.net/?XuanxuanQijing
I live in Paris, France. Take into account postage costs.
Here are some photos.