Inside the cultivation room, Jiang Ping'an entered the Creation God Wheel World, accelerated the flow of time to one thousand times, then took out the Book of Life and Death and poured vast amounts of Heart Force into it.
Only when the Book of Life and Death could absorb no more Heart Force did he stop, then leave the Creation God Wheel World.
Next, he raised the flow of time in the Creation God Wheel World to nine thousand times.
Ever since the Book of Life and Death had been refined, Jiang Ping'an had always been carefully nurturing it. It was only because he had no immediate use for the Book of Life and Death that he had not spared any enormous cost to nurture it with all his strength.
With sufficient Heart Force, the present Book of Life and Death would probably still need more than three thousand years to become a true Creation Divine Artifact in name and in fact.
The Book of Life and Death possessed immense might, but the one he wanted to kill was a top-tier Chaos God Devil. Jiang Ping'an feared its power would be insufficient, so he needed the Book of Life and Death to possess the true might of a Creation Divine Artifact before proceeding.
A nine-thousand-times flow of time consumed an enormous amount of Heart Force. Jiang Ping'an took out a Chaos God Source Crystal, absorbing Divine Source Qi to restore his Heart Force while channeling Heart Force into the Creation God Wheel to maintain the balance.
Time hurried by. Half a year passed, and Jiang Ping'an remained in seclusion the entire time, devoting all his strength to cultivating the Book of Life and Death.
As for Black Emperor, he had been keeping watch over the Great Black Heavenly Devil God