The mountain on which the Jianmen Gate is closed depends on the right side. It is on the right side, towering like a cloud, suddenly sag, and reaching out, you can touch the rock. The rock here is the kind of conglomerate. I said this conglomerate, I saw it for the first time, saying that it is a stone, indeed, it is very hard; but it is composed entirely of a fine sand, a small piece of stone, pitted, Rugged, like bread, like a round, is more like the concrete used in modern architecture.