The reason they had not activated the formation was not because they did not want to leave, nor because no good opportunity had arisen. It was because the four Demon Cultivators simply were not confident.
The strongest Demon Cultivator, who had refined the formation, had encountered danger after danger during the process. Each time, he had forcibly stabilized it with his powerful cultivation, preventing it from being destroyed midway. Yet in doing so, he had also damaged his vital energy.
Likewise, the injuries of the other two Body Integration Realm cultivators had still not fully healed. At their level, once they suffered grievous wounds, how could they possibly recover so quickly unless they had heaven-defying medicinal pills?
As a result, even though the formation had already been refined, they could not unleash its power. They could only continue swallowing their anger and wait until their injuries had recovered.
But today, the strongest Demon Cultivator sensed that the three powerful cultivators outside the secret realm had suddenly entered it, and he immediately grew tense.
He did not know why those three had entered without cause. According to their arrangements, the secret realm was not currently putting up its fiercest resistance. They were allowing those foreign cultivators to undergo proper tempering.
Even though the foreign cultivators had, over the past few years, already searched their way to the edge of the central region, this powerful Demon Cultivator had still ordered the somewhat larger clans in the central region to selectively intensify their efforts to slow the enemy's search.
They were still forbidden from using their greatest strength to resist. They were to make the utmost use of known dangers and use the laws of Heaven to kill their enemies, so as not to draw the foreign cultivators' powerful experts inside.
Otherwise, disaster