Located at the back of the statue, those vents were not that easy to spot. If one did not walk to the back of it, they would be impossible to find. Other than the vent holes, the stone slab under the idol was also movable. In other words, the space underneath the stone slab was not filled, built with an arched structure like the Amphitheatrum Flavium.
Zhang Heng removed the slate and saw only a tiny room beneath it, a space that could only fit a child under fourteen. He also found some bread crumbs and a bowl of unfinished water in it. And that was all he found. Hence, he walked around to the back of the temple, where the priests were living.
