Yang Lisheng looked at Song Yan Ning, paused for a long while, then spoke, "Do you really want to buy it?"
"Uh-huh!" Song Yan Ning nodded affirmatively.
"Alright, but don't tell your grandma when we get back. She's used to saving money, and if she finds out we bought a useless stone, she'll definitely get angry." Yang Lisheng smiled as he stroked Song Yan Ning's head, then looked at the stones on the stall. "Pick one." As long as Xiao Ning is happy, spending a bit of money is fine, as his money was going to her eventually anyway.
Song Yan Ning nodded happily, walked forward, crouched down, and began selecting raw stones from the stall. There were five raw stones at the stall, all containing Spiritual Energy with varying strengths. The strongest Spiritual Energy was in the stone the stall owner was sitting on.
