C241 Underground Tunnel 2

Nangong Qing carefully explored the tunnel ahead. The deeper he went, the greater the doubts in his heart. This was a suitable underground tunnel for the Nangong family. It was simply a maze. Such a huge project couldn't be repaired in a day or two. He actually didn't know anything about it. The most important thing was why the old man was repairing this thing.

The tunnel was long and black