These were all materials below Grade 4, which Chen Jingzhai used the Grotto-Heavens divine light to receive, harvesting all the glacial black copper that was on the surface.
The glacial black copper that was buried into the cliff would require far too much effort, so Chen Jingzhai did not do anything other than make a mark for it.
Down in the depths of the canyon at about three-quarters of a mile, a giant octopus-like creature of the deep ocean suddenly came into Chen Jingzhai's line of sight.
This thing seemed to be in a deep slumber. The massive suckers on its tentacles were covered with shining growths, twinkling as if they were alive and breathing.
What made Chen Jingzhai sharpen his eyes was the fact that beneath this giant octopus creature, there was an entrance to a dark cave, about half of a man's height.
The tentacles of the octopus were unable to reach into it, so all it could do was lean against the mouth of the cave.