Chapter 160: Scrape the Ground Three Feet

"Focus all of your mana without distraction," Xi Ying reminded him again.

Although Yuan Ming was puzzled, he sensed the urgency in the emotional shift and knew something unexpected must have arisen.

He immediately steadied his mind and concentrated on funneling his mana into the casting furnace little by little.

The Extreme Cold Rune on the Green Fish Sword gradually illuminated as it was permeated by both spiritual power and mana, and finally lit up completely.

But just then, an abrupt change occurred.

The enriching of the Extreme Cold Rune, now completed, seemed to spiral out of control. Its snowy light grew increasingly bright, and a wave of bitter cold spread instantaneously, suppressing the Gathering Spirit Formation and causing the temperature in the casting furnace to plummet.

If it hadn't been for the timely addition of spirit stones just before, the entire Gathering Spirit Formation would likely have failed in that instant.

"Damn," Yuan Ming cursed to himself.