这是画册的封面封底，最外层是一层硫酸纸，硫酸纸上有一些简单的基础形，利用硫酸纸的特性与铜版纸的封面重叠后“形”相呼应。（我去，解释这么多，还不是因为效果图做得不够好么...)
Google translate: This is the album cover, the outer layer is a layer of paper, there are some simple shape based sulfuric acid paper, using sulfuric acid paper and coated paper cover overlapping "shape" echoes. I go to, explain so much, it is not because the effect is not good enough to do it...
