The nuclear bomb exploded successfully, and at the same time, drones in the air and pre-deployed earthquake monitoring instruments immediately read the direction of seismic wave conduction.
Fu Xi imported the seismic wave data into the system and overlapped it with the map; moments later, a vague outline of an underground tunnel network appeared before Chen Jian.
Large.
This was the first thought that entered his mind upon seeing the map.
This dense underground network almost covered all the land surrounding the Jinling Ruins, and while the main central passage was not very long and even intermittent, judging from the vibration wave pattern, its diameter was at least over 6 meters!
"Damn... that Whale Catfish really dug out a new 'Underground Great Wall' system right near us."
