The number 32 might refer to the number of pieces in the book, but I should verify that. I need to confirm if "Volume 32" is part of his series, as the numbering seems off. Maybe it's a misstatement, and the correct volume is, say, Volume 1 to 6, each containing around 32 pieces. Wait, each volume typically has around 8-10 pieces. Hmm, perhaps "32" refers to a collection covering multiple volumes, totaling around 32 pieces.