Four drops of Heavy Water hung suspended in the void, and in mere moments, they had devoured all the Netherworld Qi in the surroundings, leaving not a trace behind.
After returning to his Qi Sea, Zhang Yan carefully observed and discovered that not only had the original three drops of Heavy Water been completely restored, but the newly formed drop of Heavy Water was also as flawless as a Xuanzhu, crystalline inside and out, with faint Treasure Light shimmering.
The unexpected gain of another drop of You Yin Heavy Water filled Zhang Yan with amazement. He reflected that, in the past, when he condensed Heavy Water, the You Yin Qi emerging from the Earth Veins would face numerous obstructions before reaching the surface, becoming considerably diluted in the process. Thus, while he could directly refine it into his body, it was far inferior in purity compared to true Netherworld Qi.
