Following the method for refining ancient treasures, Xu Qingtong marshaled all his divine sense and thrust it into the mirror. Just as when he had refined the Supreme Clarity Yin-Yang Cauldron, more than half his divine sense was instantly sucked away. Then the ancient treasure's inscription appeared in his mind.
"The Mysterious Light Mirror!" Xu Qingtong was delighted. He had gained another ancient treasure!
He put away the Mysterious Light Mirror and fixed his gaze on Gu Zifeng's tortoiseshell.
The tortoiseshell offered considerable defensive strength, but it was not a magical artifact, merely an artifact refining material. If it could be refined into a spirit artifact, its defensive strength would probably surpass that of his Houtu Seal.
He sorted the spirit stones on the ground by grade. There were more than three hundred high-grade spirit stones, all of which he put into the Seven-Star Bracelet. He placed the middle-grade spirit stones in his Storage Ring, while the remaining low-grade spirit stones went into his Storage Bag.
Xu Qingtong had little interest in examining the other things closely. After a cursory look, he put them into his Storage Bag.
Having finished taking stock, Xu Qingtong fixed his gaze on the three stone doors. According to Huang Chengquan, this cave abode had been left behind by an elder of the Heavenly Mystery Palace a thousand years ago.
The Heavenly Mystery Palace was one of the five great sects of Central Province, specializing in formations and puppets. Judging by what had happened earlier, Huang Chengquan's words seemed to be true. They had encountered several formations along the way, after all, and once inside the cave abode, they had encountered puppets as well.
But how to open these three stone doors gave Xu Qingtong a terrible headache!
The first door had only opened after