C1161 Building the City Walls

"Heeheehee! Hissss! Brothers, work harder! " Zhang Tao, one of the three Esper leaders, waved at his subordinates behind him, and wiped his own sweat. Carrying a huge rock, he walked towards the edge of the Lonely Mountain Cliff with heavy steps.

There were hundreds of thick rocks about one meter square built on the edge of the cliff. Each of them was not grey, but had a strange dark brown color