"Sorry for our delay," Drew said when he and the others arrived. "It took a while to convince everyone to come."
Billy's parents and friends from his hometown arrived using the tunnels and the Golems. Although they found it that Billy was in front of the carts for some reason, they didn't realize that it was a clone, and before they could see the two of them and get confused, Billy made the clone disappear. To avoid problems, it was better to keep that skill hidden.
"At least one of the world's cities managed to cooperate and come," Billy said. "Anyway, everyone can rest underground for a while. The others mages of the city are working to build more houses using magic around."