With the abundant materials supplied by the Ancient Void Dragon Clan, construction of the Emperor Spirit Grand Formation soon began.
The Emperor Spirit Grand Formation was a supreme formation capable of withstanding attacks from anyone below the Dou Di level. Once it was complete, the Underworld Alliance would stand invincible. Even against mighty races such as the Eight Ancient Clans, they would have nothing to fear.
Thus, all the major factions within the alliance paid particular attention to its construction, wishing they could finish the Emperor Spirit Grand Formation immediately.
However, even with the material shortage resolved, completing the Emperor Spirit Grand Formation in a short time remained extremely difficult. It covered an immense area and had to encompass both the Nine Netherworld Python Clan beneath the earth and the Ancient Void Dragon Clan within the endless void. Naturally, its construction would take a long time.
The alliance's various factions could do nothing about that, but at least construction was underway. Even so, the Emperor Spirit Grand Formation would probably take as long as two years to complete. That pace was only possible because the alliance had committed many powerful experts to the work; otherwise, it would have taken twice as long.
At that moment, within a secluded chamber in the Underworld Alliance, Chen Xuan slowly opened his eyes.
"Phew!"
He exhaled deeply, then a trace of delight appeared in his eyes as he looked at the dark-red pill above the Void Snake King Cauldron before him, which radiated an exceptionally cold aura.
"The Nine Yin Yellow Springs Pill is finally complete."
The pill was extraordinarily cold. Though it merely hovered quietly in the air, it still released terrifying frigid energy. The entire chamber gradually froze beneath its chilling aura, while ice crystals drifted through the air.
"A Ninth-Grade Treasure