From the heart of the formation, Master Tongtian surveyed the battle on all sides. He watched Xuandu, Ran Deng, Guang Chengzi, and Maitreya enter the great formation safely beneath the Four Saints' layered protection and take their positions before the formation eyes housing the four immortal swords.
His usually calm, aloof expression finally changed completely, and unprecedented panic flooded his eyes.
He had commanded the Immortal-Slaying Formation for countless years and knew that its sole fatal weakness lay in the immortal swords at the formation eyes of its four gates.
With the Four Saints locked in a stalemate and unable to break the formation through a frontal assault, he had been certain of victory. Never had he expected Laozi and the others to act so ruthlessly.
They had actually sent their Quasi-Saint and half-step Saint disciples into danger, deep into the killing formation, intending to forcibly extract the swords from its formation eyes and destroy its foundations.
But now he had lost the initiative. Thick barriers of saintly power enveloped all four intruders, while Taiqing, Yuanshi, Jieyin, and Zhunti protected them from afar.
The formation's myriad streams of deadly sword qi and lethal formation-path attacks were all kept outside.
Despite the overwhelming might of the Four Swords of Zhu Xian, they could not so much as scratch the four intruders.
If this continued, the formation eyes would inevitably fall, and the supreme Immortal-Slaying Formation he had expended endless origin power to drive would collapse completely!
At this critical moment, Tongtian lost every trace of composure. His gaze abruptly shifted, piercing the layers of sword mist and malicious qi to settle on the densely packed immortals of the Interception Sect standing in formation outside. His voice thundered across heaven and earth.
**"Yunxiao! Activate the Myriad Immortals Great Formation! Reinforce the Immortal