After returning to the underground laboratory used by Da Qing, Li Zhirui spoke, "This time, I will conduct the experiment with you."
The main reason was the concern that Da Qing's strength alone wouldn't be enough to suppress the four rank-six Water Devils. During the experiment, they might cause trouble, or even intentionally sabotage and harm Da Qing.
Da Qing understood Li Zhirui's worries, and he was concerned himself. He nodded and said, "That would be for the best."
In the Cave Heaven, Li Zhirui placed multiple restrictions on the four rank-six Water Devils, leaving no chances for them to escape. Then he released them and warned, "You better obey and follow instructions. Otherwise, I will show you what it's like to wish for death!"
As he spoke, dozens of barbed Spirit Vines grew beside him. The barbs flickered with a cold gleam, intimidating to those who laid eyes on them.
"Why should I listen to you?"