Pu Jian and Ding Si entered the underground tunnel with the cooperation of Dingli Construction workers and came out shortly after. Pu Jian's judgment was correct; below was a thief's tunnel. The collapsed section was exactly the weakest part of the thief's tunnel, and the discovery of the hot springs, followed by successive construction, caused the collapse, exposing the thief's tunnel below. The thief's tunnel led inward to the ancient cellar pool and extended outward to the outside of the distillery.
This evidence suggests that the thieves excavated from the outside, digging all the way to the bottom of the distillery's ancient cellar pool. This tunnel is roughly more than forty meters long and has certainly existed for quite some time. The person who dug the tunnel was someone else.
