Thus, Tang Wulin's presence was not detected by the Northsea Army Corps' numerous types of sensors as he slowly made his way forward underground. The seismograph displayed that everything below ground was of normal fluctuation. A single person's activity was far too small for the seismograph to give out a warning.
Tang Wulin rested for a while when he was tired, then continued to dig when he had recuperated. He had even lost count of how long he had dug through this place.
During that period of time, he had twice returned to the surface to rest. When he was famished, he went to the sea and hunted for a sea soul beast before relying on his Golden Dragon Claws to slice it into sashimi. He returned to his underground world to continue digging after his physical strength was restored.
"Ding!" Tang Wulin immediately stopped moving when he suddenly heard the crisp sound. He retracted his aura swiftly as his hairs stood on end.
'What's going on?'