These two underground palaces, from the entrances and exits, size and shape, are obviously very similar, and it can be basically determined that the right ring and the left ring of the underground palace are the same.

Therefore, according to this underground palace map, Yuan Dashuai was thinking hard about how to defeat the enemy.

At this time, a large crypt down the center of the dungeon caught his attention.

The whole of the underground palace is dug in a circular plane of a hundred zhang deep underground, only in the center of the underground palace, there is a slope tunnel leading to the underground secret room of two hundred zhang deep, this secret room is a dead end, there are dozens of zhang square. The area around the chamber is full of natural solid stones, and it is impossible to dig out the passage with earth spells.

Obviously, a lot of spiritual resources can be stored in the secret room, and there is also groundwater passing through, as long as the reserves are sufficient, hundreds of people can still hold on here for a year.

Obviously, Yuan Dashuai couldn't wait for a year, and no one could say how long the reserves of the underground palace monks could last, and if they could last for two or even three years, it would be possible.

If the siege is not attacked, or the attack is delayed but not broken, Yuan Dashuai will not only not get military merits, but may end up with the suspicion of delaying the military plane and raising his own respect. This is not in line with Yuan Dashuai's style of using troops like thunder and quiet as Mount Tai.

Yuan Dashuai understood that this underground secret room was used by the underground palace monks to hold on for a long time after the great array was breached, so as to wait for change.

He decided to break through the big array first, and then storm the underground secret room, so as not to let the underground palace monks hold on here for a long time, even if they paid a certain price, they had to take it as soon as possible.

Judging from the recent intelligence of the head of the Red Eyebrow Red Eagle Office of the Military Intelligence Office, there are several Yuan Infant Ghost Cultivators in and out of the underground palace. The location of this underground palace is only ten days away from the neighboring ghost land of Mengyuan Prefecture, since the human cultivation has already shown signs of connecting with the ghost cultivation. It is necessary to prevent ghost cultivation after getting the news. Pouring out of the nest. Come to the rescue.

The ghost cultivators in the ghost land of Mengyuan, adjacent to the ghost cultivators in the northern Luo country, are all active underground along the border. They can dispatch as many as twenty or thirty Yuan Infant Stage Ghost Cultivators, plus the thirty or so Yuan Infant Stage Cultivators in the underground palace who are stubbornly waiting for help, and most of them are likely to escape if they are combined with the outside world.

Now that so many troops of the Northeast Army are mobilized, it will be even more earth-shattering when attacking the formation, and the news of the siege of the underground palace will not be leaked. Yuan Dashuai was not at all sure. Perhaps, when they were marching, they alarmed the ghost cultivators who were cultivating in a certain crypt, and perhaps, when they were attacking the formation, they alarmed the nearby Yuan Infant Cultivators who had come to live with the people of the underground palace.

Therefore, Yuan Dashuai decided to concentrate all his efforts and strive to exterminate the monks of the underground palace within ten days. Capture the royal family of the former Xia Kingdom, which is likely to be hidden in the underground palace.

He commanded Ruoding and began to send out the front and rear left and right middle five armies. Twenty Yuan Infant Demon Cultivators from each army took turns to go into battle and forcibly attacked the gate of the Great Array of the Left Ring Underground Palace.

This dungeon great array is a top-level large array, which can withstand the attacks of dozens of Yuan Infant Demon Cultivators for about three days.

If the monks in the formation send out a mana attack when the demon cultivator is attacking the formation, it can greatly cancel out the attack power of the demon cultivator and prolong the time to break the formation.

However, this is what Yuan Dashuai wants, each of the five armies has twenty Yuanying monks, and the underground palace Yuanying monks must dispatch at least twenty people accordingly in order to effectively offset the attack power of breaking the formation.

However, it is reported that there are only about thirty people at most, so after the wheel battle, the one who can't support it will be the Digong Yuanying monk. The more they consume when defending the perimeter, the easier it is to be breached when they retreat to the chamber after breaking the formation.

After Yuan Dashuai, Linghu Junshi and the generals discussed, they soon began to deploy the wheel war, and the battle began a quarter of an hour later.

Sure enough, each side dispatched twenty Yuan Infant monks, and fought fiercely at the gate of the dungeon array, and the demon cultivators forcibly attacked the various spells of the formation, and under the barrier of the formation, they were also restrained by the spells of the monks in the formation from time to time, and the mana consumed was thirty percent faster than that of the monks in the array, and they were obviously at a disadvantage.

However, the demon cultivators take turns to go into battle every three hours, and the Yuan Infant Demon Cultivators who go into battle each time, after twelve hours of rest, just recovered their full strength, and can always storm the dungeon array.

As for the underground palace monks, they can only send thirty Yuanying monks, and after defending for three hours, only ten monks can take turns to rest for three hours, otherwise they can't maintain enough defensive strength, and the big array will be in danger.

Fighting for three hours with all your strength, you must rest for more than ten hours in order to fully recover your mana, and only three hours of rest is obviously not enough.

In this way, in the afternoon four days later, the two sides had been attacking and defending for forty-five hours. The demon cultivation team is still as powerful as ever, attacking with all its might, and the morale is high, while the people in the underground palace are cultivating, and the mana is only more than sixty percent, and it is becoming more and more overwhelming.

Although there was a large formation blocking it, and there were no casualties on both sides, the formation had loosened somewhat, and the situation of human cultivation was not optimistic.

At this time, the two sect masters and Wang Xian, who were standing behind these Yuanying monks and watching the formation, were discussing the battle situation.

"Wang Daoyou, our monk's mana is only more than sixty percent left, if we continue to defend and block the enemy, once the big array is broken and when we retreat to the underground secret room, we will not have enough mana to maintain the defense. The palace master of Guanghan Palace politely discussed with Wang Xian.

At this time, because Wang Xian cultivated to be at the same level as them, and had a large number of immortal talismans in his hand, it can be said that his strength was already the first person in the infancy of Xia Guoyuan, even if the palace master was the sect master of the top sect of Xia Guo, he had to make friends on an equal footing, full of respect.

Wang Xian smiled and shook his head, and said: "Don't worry, although we defend with all our might, the enemy is also calculating our manpower and remaining mana, the greater our consumption, when the formation breaks through and retreats to the secret room, the more the enemy will despise it, and the more he will rush in without leaving a way back, and attack us with all his might, without any scruples." ”

He paused, and then said, "If we still have the strength, they will have some scruples if they want to attack the secret chamber deep underground through the narrow tunnel. Maybe they will divide their troops and send some of their troops into battle, and still take turns attacking the secret room, and then we will fall short. ”

The two sect masters nodded when they heard this, and although they understood Wang Xian's intentions, they still looked solemn.

Once the strength of the two Yuanying Cultivators drops greatly, it is completely impossible for them to break through and save a small part of their strength in order to make a comeback in the future.

It can be said that the two sides of today's battle, like an arrow on the string, have to be sent, and it is like a big gamble, both sides are desperate and do not leave behind. Either the entire army of the other side has been annihilated, or the entire army of the other side has been annihilated, and there is no second way to go.

In the attack and defense of the top-level array, the Jindan period monks can't help much, this is a contest between the core monks of the two sides, which determines the outcome of the battle.

Wang Xian watched the formation in the vicinity of dozens of zhang behind the formation gate, at this time, his cultivation was already in the earth star not to be a second person, looking at the battle between the monks on these two sides, he found that the two major sects are worthy of being the top sects, the monks have pure mana, mysterious spells, variety, and experience.

And the demon cultivators are also perennial fighting methods to survive, fighting the law refining body, is a necessary means for them to advance and advance, although the mana is slightly worse than human cultivation, but the victory is not afraid of death, scrambling, the order must be done, morale is like a rainbow.

Some demon cultivators who were accidentally injured not only treated as if they were nothing, but instead stimulated greater ferocity, like madness, and more fierce offensives. Regardless of the pain and his life, Wang Xian was also a little moved.

Human cultivators are accustomed to relying on mysterious weapons, talismans, and formation attacks, and the attacks are often far away from themselves, making them feel much safer psychologically, but they also lack the courage to fight fiercely.

And the demon cultivator refines the body by giving important body parts all the year round, and directly uses the body to bear the blow of the mysterious weapon, and the body is strong and sensitive, which is better than that of human cultivation.

Many terrifying people cultivated fire spells and gold spells, and after hitting the sharp claws and sharp teeth behind the demon cultivation body, the demon cultivation was unscathed, and the solidity and toughness of his body made Wang Xian feel ashamed.

After another three days, the mana of the monks in the underground palace is only more than thirty percent, and if it continues like this, the mana of the monks will fall below two percent in two days, and the cultivation will fall to the end of the golden pill, which will not work anyway.

Wang Xian looked at the anxious expressions of the two sect masters, and after opposing the withdrawal twice, he finally agreed that they should immediately retreat to the secret room deep underground.

The two sect masters are now tied to the chariot by Wang Xian, and they have to obey Wang Xian's command, plus they are well-informed, and they still have a certain confidence in Wang Xian's large number of immortal talismans, and they still have a certain confidence in his character, so they willingly cooperate with the battle, which makes Wang Xian grateful, and strengthens his determination to protect the monks of the two sects. (To be continued......)