C643 This Is Unbearable

Although Zi Tianhao had refined and assimilated Sun-swallowing Inner Core before, so according to the usage, it was naturally Sun-swallowing Inner Core that was stronger, of course, it was still a treasure of the Saint Grade after all, and one of them could increase his power by a stage, but, this Heavenly Yellow Spirit Crystal was just a treasure of the Royal Grade, yet it could actually have