Meng Yuan didn't attack on the same day, because with Meng Yuan's own summoning speed, it was impossible to release all the troops, although a little bit of summoning could summon all the troops sooner or later, but the enemy was not a fool, can he watch you summon little by little? It is estimated that before you finished summoning, they killed you in advance. Therefore, what Meng Yuan needed most now was not to summon troops, but to find a relatively hidden place but to start building a portal in the position of the frontal battlefield.

Fortunately, the rear of the demon clan was empty at this time, and they didn't have any wars here all year round, so they were relatively lax. So Meng Yuan quietly hid behind a mountain pack five kilometers away from the castle and began to build a portal.

The portal was not built for a long time, after a day of preparation, Meng Yuan was ready to start a war at any time, during this period, although there were also demons passing by here occasionally, but they were all killed by Meng Yuan quietly, so in just one day, the demon clan has not found out what Meng Yuan has done.

"Kerr! Get ready to command the battle! I'm going to raid that Demon Lord! ”

Ke'er didn't have any doubts, but began to carry out Meng Yuan's orders attentively.

As for why Meng Yuan did this? That's because this is the best way, Meng Yuan will atomize, which can have a surprise effect, and if you are lucky, you can directly kill the Demon Lord and make the enemy lose command. If he is unlucky, he can also calmly escape from the battlefield. The frontal battlefield is different, one is that Meng Yuan, as a layman, knows what tactics and the like at all, and he is not as good as artificial intelligence in terms of command and coordination, so Meng Yuan had to hand it all over to Ke'er. The most important thing is that once the other party uses the large-area killing magic, he will definitely still be on the army, so Meng Yuan will become safer when he leaves the army, lest Meng Yuan be inexplicably killed by the large-area killing magic.

Woo~~~Woo~~~

The horn of war was sounded, and for the first time in countless years, the horn of the castle battle of the demon clan was sounded. If they are recruited from the castle, they will be ready for battle and have already entered the combat position. The soldiers recruited in the race are different, they are a natural race born to their parents, they have thoughts and emotions, and they have all kinds of emotions. When the battle horn was blown, they did not enter the state of war as if they were recruiting soldiers, but looked in the direction from which the horn sounded in amazement, apparently so that they did not know what was happening after years of tranquility.

In fact, this can't blame them for being at a loss, although the demon race is a natural warrior, but that is also in comparison with other races. In fact, no matter what race it is, there will be some aggressive or non-aggressive in it, depending on the proportion. It's like a country where there are good people and bad people, but you can't say that the whole country is all good people, or the whole country is all bad people, right? It's just a matter of what percentage of people are optimistic.

The Demon Clan is like this, in terms of proportion, they have more militants, so it is said that the Demon Clan is a natural warrior, but it does not mean that their entire clan is 100% warlike. Coupled with this attack on the underground race, the Demon Lord has exhausted the strength of the entire race, striving to take down the underground race at one time. Therefore, those who remained in the rear were some clansmen who had not experienced battle, as well as a small number of recruited castle troops. In the Demon Lord's mind, the rear has been safe for countless years, but it didn't expect that at this critical moment, a human who had crossed over was killed.

And in the face of the fact that most of the Demon Clan's combat power is not there, will Meng Yuan still get used to it? Of course not, if you don't take this opportunity to bite a piece of its flesh, it won't be Meng Yuan's character!

Boom boom ~~~ whoosh ~~ boom ~~~

Soon the roar of high-tech weapons resounded over the castle, waking up the still stunned natural people (demon people). Let them realize that war is coming!

Castles are the product of magic, so no matter how much they are destroyed, they cannot harm the castle in the slightest, which has been proven by countless years of war, otherwise these magic castles would have been destroyed countless times. Therefore, Meng Yuan and Ke'er both launched a high-intensity artillery baptism on the castle with confidence, taking advantage of the fact that the other party was caught off guard, they used all kinds of artillery to strangle the demon clan first, and at the same time covered the advance of the ground troops.

And Meng Yuan had already atomized the moment the cannon fire sounded, and secretly drifted along the edge of the battlefield towards the highest floor of the castle, because according to the memories read, the Demon Lord's favorite place to stay was the highest part of the castle, because it was not only a symbol of power, but also could observe the entire castle and the situation outside through the building, which made the Demon Lord feel high. As for whether this rumor was true or false, Meng Yuan didn't know, and he didn't bother to pay attention to it, he only knew that the Demon Lord was there.

Boom~~~~

"Who is it! Who would dare to disturb the peace of my Demon Lord! Is it the filthy underground race? Or the humble and shameless terrans? ”

The Demon Lord's roar was heard in the distance. Although Meng Yuan could ignore its anger, the demons under its command were different, they trembled under the roar of the Demon Lord.

But artillery fire is relentless, and don't expect artillery fire to understand whether a creature is angry or not, they just know that the explosion is exploding, taking more life with the fragments of their own bodies.

When the second round of artillery fire was over, the stunned demons reacted to the fact that they had been attacked by the enemy!

Although they were not elites left behind, and their combat skills and consciousness could not be compared with the armies that fought outside all year round, the demon clan was worthy of being a natural fighting race, so they quickly took out their weapons and entered the battle position amid the angry scolding of the high-ranking demons.

Although they still don't know who attacked them, let alone where this group of enemies came from, this does not prevent them from fighting, they only know that it is enough to kill the enemy and defend the royal city.

Boom~~~Boom~~

With Kerr's command, the third round of artillery fire has once again descended on the sky above the demon clan, and with the cover of the third round of artillery fire, tens of thousands of soldiers and undead cannon fodder are advancing frantically, they have only one goal, that is, to use the cover of artillery fire, and then use tanks to break through the gate and let the soldiers enter the castle to engage in street battles with the enemy, because only in this way can they avoid the opponent's large-scale magic damage as much as possible.