The battle with Lin Daozi is currently evenly matched, but if they continue to be worn down by this formation, it will be even more difficult for them to defeat Lin Daozi.

At this moment, Shi Xuan's barrier suddenly broke, and she rose from the third level of Foundation Establishment to the fourth level. As her spiritual palace expanded, the surrounding spiritual energy poured into her body as if it were free, consolidating her new cultivation and laying a new foundation.

However, Shi Xuan's constitution was unique, meaning his foundation was dozens of times larger than others, resulting in a greater and stronger demand for spiritual energy. This manifested outwardly as the top-grade spirit stones that Lei Zhi invested turned to dust within moments.

The formation began to draw spiritual power from Lei Zhi again. At this critical moment, Lin Daozi pressed closer and closer. Lei Zhi had no time to think and took out more top-grade spirit stones to throw into it, which all became nutrients for Shi Xuan's advancement.

After the foundation of Shi Xuan was laid, the operation of Wanwu Sheng did not stop. In fact, because it had advanced to a minor level, Wanwu Sheng became stronger and more active, and its speed of absorbing spiritual energy was faster.

Lei Zhi felt that the array consumed less spiritual energy compared to the previous period, but it still consumed more than at the beginning.

With just that slight distraction, Lin Daozi's sword energy was already upon him, forcing him to scramble to defend himself.

Inside the formation, as Shi Xuan continued to advance, Lu Shenzhi's Soul-Nourishing Wood finally improved after being nourished by spiritual energy countless times. His soul could now leave the Soul-Nourishing Wood and float outside for a while.

His phantom image startled Shi Xuan when it first appeared, but then he remembered that Shi Xuan had said he would come out later when he entered the Soul Nourishing Wood, so he thought it was normal.

The formation was isolated from the outside world, and Lu Shenzhi was overjoyed to finally be able to move around. He floated around in the formation a few times, then stepped on the formation's core and floated out to take a look. After a moment, he returned to Shi Xuan's side and said, "Outside, Lei Zhi and that Pang Jiaxiang are fighting two against one. Do you want to go out and take a look?"

Shi Xuan rolled his eyes at him and said, "With my cultivation level, how could I possibly deliver vegetables? Right now, the best thing I can do for my master is not to be a burden."

Lu Shenzhi chuckled twice and said, "I thought you heard it was two against one and were worried about your master, so you were going to rush out to help without hesitation."

Even though he was now just a spirit, Shi Xuan still mocked him mercilessly.

"Senior Brother, did you read too many storybooks when you were still alive? Or did you imagine too many strange stories when you couldn't move? Seeing injustice, you draw your sword to help? Regardless of whether you can win or not, you have to fight first? Then, because you are not strong enough, you are captured by bad guys and taken hostage, which only makes you a burden to others, and then others have to risk their lives to save you... Is this good or stupid?"

Lu Shenzhi touched his nose. His master was also his master, and he was very worried. If he were the one in the formation today, he probably would have rushed out to help his master. He wouldn't have thought about anything else.

At this moment, Lu Shenzhi felt that Shi Xuan was implying something about him, mocking him, and in his heart, he thought Shi Xuan was stupid.

"Hmph!" Lu Shenzhi snorted coldly and floated out of the formation again to watch his master fight.

Shi Xuan was baffled. This person had just been released and already had a temper? And now he was putting on airs for no reason...

But Shi Xuan always puts aside things she can't figure out, because if she leaves them for too long, she'll forget about them. She continues her great task of upgrading, accelerating and accelerating, and if the myriad things were a wheel, it would probably have already sparked a fire by now.

Having found himself in a difficult situation, Lei Zhi had no choice but to keep throwing spirit stones into the formation.

The two did not communicate, but maintained this peculiar tacit understanding. Lei Zhi guessed that some earth-shattering battle must have taken place inside the formation to consume so much spiritual energy, while Shi Xuan was curious about the source of the formation's spiritual energy, as it seemed inexhaustible.

In this peculiar balance, with the dual blessing of top-grade spirit stones and a Nascent Soul cultivator, Shi Xuan felt the pressure in her spiritual palace again, and she was showing signs of advancing again!

Lei Zhi is currently in dire straits, with very few of the top-grade spirit stones he has accumulated over the years remaining, while Lin Daozi on the opposite side shows no signs of defeat. If this continues, they will be the ones to lose!

His gaze darkened, as if he had made up his mind, and he took out an object from his storage space. The object was a thin cylinder, resembling a long flute that had been broken off. Although the object's appearance was simple, its spiritual energy fluctuations were very active, and a faint iridescent light could be seen on its surface.

Lin Daozi's eyes widened in doubt; this was actually a celestial artifact!

The power of immortal artifacts is undeniable, but the requirements are also high. In the cultivation world, only ancestors at the Nascent Soul stage can use them. And there is still a Void Refinement stage between the Nascent Soul and the Deity Transformation stage. If he wants to use this immortal artifact today, he will need to cross at least two major stages, which is no easy task.

But since Lei Zhi brought it out at this time, it meant that he intended to use it, and Lin Daozi was on high alert.

Lei Zhi, his face contorted with worry, took out a black pill and swallowed it. If Shi Xuan were outside the formation, he would recognize it as a Spirit Explosion Pill, a sixth-tier pill. Its effect was to forcibly elevate the user by one tier, but the side effect was that after a quarter of an hour, once the effect wore off, the user would become weaker, even impairing their cultivation and greatly hindering their future progress.

Therefore, although this elixir can be effective in battle, not many people dare to use it.

Lei Zhi forcibly pulled himself to the early stage of the Void Refinement realm, using his spiritual power to force out a mouthful of blood from his heart, which he dripped onto the immortal artifact. In an instant, the artifact flashed with a burst of colorful light. After dripping his heart's blood, Lei Zhi suddenly poured a large amount of spiritual power into the broken flute of the immortal artifact. Instantly, the artifact launched a silent attack towards Lin Daozi.

The attack seemed to target the soul; it was silent, yet incredibly powerful.

Even though Lin Daozi had made preparations and used defensive magic artifacts, he was still forced to cough up blood.

He took a few steps back, secretly thinking about how to deal with the next attack. Even if the attack could only last for a quarter of an hour, that quarter of an hour would not be easy to get through.

While pondering, Lei Zhi activated the immortal artifact again. Lin Daozi had already summoned his strongest defensive magic weapon and was retreating hastily, but the distance between the immortal artifact and the magic weapon was too great. Lin Daozi spat out another mouthful of blood, and this was only because Lei Zhi had forcibly increased his spiritual power.

At this moment, Lin Daozi had already considered retreating, but thinking of his disciples who were still trapped in the formation, he forced himself to stay alert. He couldn't afford to collapse, otherwise his young disciples' lives would be in danger.

This was also Lei Zhi's first time using this celestial artifact. After two tentative attacks, he couldn't help but sigh that a celestial artifact was indeed a celestial artifact. Even the strongest magical artifact in the lower realm couldn't compete with it.

Seeing Lin Daozi showing signs of defeat, Lei Zhi finally felt relieved. He gathered his spiritual power, intending to use a full-force attack on Lin Daozi to defeat him in one move.

The immortal artifact displayed a richer color, and even before it began to attack, it gave off a powerful sense of pressure, making the two Nascent Soul cultivators present feel as if they were being crushed by a heavy object.