Thirty meters underground.
In the long tunnel, Wang Chen dug forward with all his strength.
Large chunks of earth and stone were dug out with specially made tools, then promptly vanished without a trace.
Whenever the soil filled the Storage Bag, which held one cubic zhang, Wang Chen stopped and used the Earth Stone Technique to solidify the newly excavated walls into hard, thick rock walls.
Then he returned to the surface and emptied the Storage Bag.
Repeating this cycle, the tunnel grew longer and longer.
This tunnel connected to the underground chamber he had built earlier. According to Wang Chen's plan, its exit was in a patch of woods six or seven hundred meters from his home.
But it was not a true escape route.
Lu Defang's sudden appearance that day had given Wang Chen a severe case of "persecution paranoia."
He felt that the "Doomsday Fortress" he had envisioned was no longer as safe as he had expected.
So Wang Chen altered the blueprints.
He would keep digging downward—another few dozen meters—and carve out a second, perhaps even a third, underground chamber.
Layer upon layer, like a cunning rabbit with three burrows, real and false intertwined!
As for the tunnel he was digging now, it would serve as a temporary escape route for the time being, and later be used to mislead enemies.
And that was not all. He intended to dig several more tunnels just like it.
Turn the place into a maze!
That way, if he ever encountered an irresistible danger and hid underground only to be pursued by a powerful enemy, then all this hardship would become the capital that saved his life in the future. It was absolutely worth the time and effort.
Crack!
All of a sudden, his iron pick struck something hard.