Although spirit stones were planted within the three stone puppets, they didn't have minds of their own. Zong Shou could only use some of his intent to control them. To him, this was a brand new experience.
As this was the first time he was doing so, the puppets were wobbly and shaky, and fell down several times.
By the time he slowly got the hang of it and understood how to control them, an hour had already passed. They straightened their arms and stretched their legs before walking to their designated positions to start digging using their stone arms.
Although the stone puppets were a little cumbersome, they had great strength, around ten thousand kilograms of power. Every time their stone palms smacked down, they would dig out huge amounts of dirt. In just a short while they had dug a hundred feet down. When they faced stone that was hard to break through, Zong Shou used his Lightning Tooth Sword to forcibly cut through.