Is it a lack of wood, not a wooden library?

No, Wei: It's Yin soil, ranking eighth among the twelve branches. Among human resources, it includes Mu Yi, Jitu and Ding Huo. Because it is a tomb god, its internal atmosphere is complex, so it appears in gaseous form. In the five elements of life science, it has a changeable shape, which is inflamed when it meets fire, brittle when it meets gold, solid when it meets wood, and fights when it meets water.