Nobody knew what Mu Can had just experienced. If there was a treasure in the Mortal World that could allow one to comprehend Sword Dao so swiftly, it had to be the Reincarnation Pearl.
Even Mu Can had very limited knowledge about the Reincarnation Pearl. Just now, he had communicated with the Artifact Spirit of the Reincarnation Pearl, a little dog that loved to bite people. In a brief exchange, the Artifact Spirit agreed to help Mu Can unlock the Third Layer of the Reincarnation Pearl.
If the First Layer of the Reincarnation Pearl is the Soul Power Space, containing the remnant soul of Purple Cloud that he had saved by chance, and the Second Layer is a small plane saved by the Thief of Heavenly Dao, then the Third Layer is a grand gift prepared by the Thief of Heavenly Dao for his disciples.
"Time-Space City."
In just a fleeting moment, Mu Can's mind entered the Third Layer of the Reincarnation Pearl, which was a vast library storing tens of thousands of books.