Fang Tianyu was extremely smart and naturally understood this principle. She did not hesitate and put away the 20 Breakthrough Stones. She looked at Wang Xiao and said seriously, "I'll take these Breakthrough Stones as loans. I'll definitely return them to you after I accumulate enough!"
"Actually, you don't have to collect them to return them to me."
Wang Xiao smiled and said softly under Fang Tianyu's puzzled gaze, "I heard that the Fang family has a material called the [Mutated Core]…"
Ever since Wang Xiao had tasted the sweetness of upgrading with the [Mutated Core] last time, he had been unable to forget about it. Therefore, he asked Ma Yunle to investigate in private and wanted to buy a few more [Mutated Cores].
