Because at the end of the day, the world structure had changed.
Only the strong will survive.
…
Riya's side
Samuel brought Riya to the backyard of the Jones Family Residence. At this time, Ruben was already there with a pile of stone beside him. He himself was sitting on a chair and looked at the stone in his hand.
Seeing the stone's shape, Riya guessed that Ruben has been practicing to make the formation for some time. These stones were somewhat flat on one side, which was suitable to draw runes and formation.
It was not impossible to draw the runes on ragged stones, but it'll be harder and the efficiency might be affected.
For beginner, it would be better for them to use smoother and better stones.
"How's your progress?" Samuel asked when he saw Ruben staring at the stone in front of him. He knew that Ruben had some fixation about making runes, but he was not sure about the other party's talent.