When everything returned to peace, Cassie and Selina looked at each other.
"Give me the shovel and see what's down here?" Cassie waved to the others and said.
Selina shook her head and grabbed Cassie's arm, trying to pull her aside.
"Let the mechanical guards dig it out. It will be safer."
Cassie hesitated.
"Or we can ask the zombies to do it."
"They also have great physical strength."
Selina insisted. What happened just now was frightening.
Cassie nodded and followed Selina to the back.
Several mechanical guards and the zombies began to dig holes with shovels.
Soon, they dug a circular pit with a diameter of one meter.
The soil was all black, and then strange green liquid gradually gushed out, accompanied by a heavy stench.
"Wait, stop. You guys come up."
Seeing the sudden change in the situation, Cassie cried out in a hurry.
The mechanical guards and the zombies jumped aside one after another.