The true principle is that even reality is not really real, and even falsehood is not unreal. It is not something calculable. Like space, it cannot be cultivated. If any intellectual fabrication occurs in the mind, then it is governed by measurements. This is like divination signs—they are governed by metal, wood, fire, and earth. It is also like sticky glue; the kind demon can grab you, stuck in five places, and go home freely.