Puzzle Storage Box

玩1000片拼图时觉得自带的分类板不好用，分类时拼图很容易跑到别的区域，自己建了一个适合收纳的模型，适用于70cm×50cm的一千片拼图。打印时注意盒子高度为6cm。When playing with 1000-piece puzzles, I found the built-in sorting board to be not very useful. During the sorting process, the puzzles often moved to other areas. So I built a model that is suitable for storage, which is applicable to 1000-piece puzzles with dimensions of 70cm × 50cm. When printing, please ensure that the height of the box is 6cm.