The Aura of the Dragon-Patterned Golden Casket was an environmental effect. To activate it, Bai Xiaowen had spent a full 100,000 Psionic Particles!
Every two hours, the concentration of yin energy in an outsider's body would rise by 2.5%. After eighty hours, they would turn into a Demon.
In other words, Awakeners normally had only three or four days to explore.
Of course, Bai Xiaowen had not gone that far. He left Empress Xiao in place and spent some Psionic Particles to give her replica a set of memories, creating a hidden surprise.
The replica Empress Xiao no longer stayed at the Mass Burial Ground in the western outskirts. She rode a floating spirit carriage along an irregular route through the outskirts of the Treasure Ground Space.
If Awakeners encountered Empress Xiao's two ghostly palace maids and did not attack, allowing the maids' chains to drag them before her carriage, they would unlock the hidden surprise: purification.
Empress Xiao could temporarily purge the yin energy from an Awakener's body, saving them from turning into a Demon.
The process was not free. Awakeners had to pay Psionic Points. The amount depended on their template, level, and the proportion of yin energy already accumulated in their bodies.
The Psionic Points Empress Xiao collected would be converted into the Treasure Ground Space's Psionic Particle reserves at a ratio of ten to one.
Each Awakener had only one chance to be purified. Used wisely, it could let them remain in the treasure ground for nearly a week, which was a reasonable time limit.
If greedy Awakeners chose to kill Empress Xiao, they would find that she dropped absolutely nothing.
Bai Xiaowen still respected the empress, even if this was a replica rather than the real woman. To be clear once again, the souls of