Countermeasures

A few days later, a white light encompassed the empty lake and spread in a circle to the surrounding one hundred kilometres.

Seeing this, all cultivators below the nascent soul realm closed their eyes and didn't dare to look directly into the pervasive light.

Fortunately, the phenomenon didn't last for too long.

After ten breaths, the white light dissipated to reveal a transparent barrier around the lake. 

"Did we succeed?" A formation master asked.

"As long as nothing unexpected happens, this formation is enough to keep the demonic qi from flowing to the outside world." Jiang Yue nodded and answered.

At the same time, the heavy stone that had been pressing on his heart dissipated.

Although Jiang Yue didn't show it, the last few days were stressful.

This was not because he didn't believe in himself and his abilities but because he worried the formation wouldn't be arranged on time.