Looking at the canyon pass in the distance, Wu Yi frowned, this terrain is somewhat similar to the Sanshan Pass, but the front is narrower, and there are fewer points that can be attacked, and the pass wall is full of traces of knives and axes, stones and fires. The peaks on both sides reach straight into the sky, tall and steep, the mountains are littered with rocks, barren grass, and some slender miscellaneous trees, although the lone peaks on both sides are not impossible to climb, but they are absolutely impossible to march.

Nan Yongyin specially lined up a deputy general and a team of personal guards to accompany him to protect, but Wu Yi couldn't find any way at all!

This kind of pass is much higher than the regular city wall, and the same war equipment can form an absolute suppression of the attacking side on the pass, just by relying on the offensive and defensive positions of the two sides, the attacking side needs at least three times more troops, and more than five times the war equipment is possible. But what does Flying Phoenix City have now? At most, the number of troops is twice that of the canyon pass, which is not enough to die at all.

Wu Yi, who had studied the terrain for a while, finally reluctantly returned to Feifeng City, at this time the city was carrying war equipment on a large scale, preparing for the next battle. It's just these weapons of war......

Steel-framed catapult? Strengthen the five-fold ladder? White Tiger Battle Stage?

What kind of antique is this? He didn't even see the shadow of the energy cannon he was familiar with, and he was really not joking to attack the danger with this kind of thing?

"All the weapons of war in the city are these?"

"Yes, Strategist, is there any problem?"

"The canyon closes too?" Wu Yi asked next.

"Yes, these are already the most advanced weapons of war today, and they are definitely not inferior to the military country."

After hearing all this, Wu Yi couldn't help but smile, although the mission background was introduced a lot, there were many more that were not mentioned, and they needed to be explored by themselves. It is true that the lower the level of war equipment, the more difficult it is to attack a Xiongguan such as Canyon Pass, but in the same way, the city defense on the pass will be much weaker than normal, and the suppressive force of the attacking army will be much smaller.

The more primitive the war, the easier it is to find opportunities, and now he needs to know his own strength in detail, not just the configuration of troops!

"Take me to the combat warehouse."

"Yes!"

The strength of the commander is not as good as that of the soldier saint, and it is very hurtful to want to use the strength of the army to demolish the city defense, and there are not many strong people in the wind forest army, including Nan Yongyin, a total of three people, if there is a chance, Wu Yi's combat effectiveness can also play a certain role, but the premise is to break the barrier of the canyon pass first. The 250,000 troops are all regular troops, of which 50,000 are legion magicians of various departments, and the rest are all infantry, and there are no pure flying troops, so there is no shortcut to tackling key problems.

If you attack strongly, the troops will definitely not be enough, and you can only find a way to reduce the suppressive force of the upper and lower levels when the battle starts, or weaken the city defense of the canyon pass, and only in this way can you win. However, Wu Yi couldn't think of an effective way for the time being.

The strategic warehouse of Feifeng City is very large, and the soldiers are now carrying war equipment, these primitive war equipment are nothing to see, and what is even more exaggerated is that if there is no battle platform, the maximum range of the steel-bone catapult cannot hit the canyon pass. In addition to the war equipment, there are also a large number of magic crystals of various series stacked in the combat preparation warehouse, most of which will be distributed to the legion mages in the army in the future to support them to burst out with stronger combat power, which is like matching holy water to angels.

In addition to the magic crystals, there are also a large number of brown barrels, which account for almost a third of the entire war warehouse.

Black Fire Radiant Star Oil: A gold refining product, burning on a large scale will produce a violent explosion, and the flame has strong adhesion.

This is stronger than the incendiary bombs in Hulu City at the beginning, maybe you can use this! Wu Yi doesn't value the damage caused by the "explosion", what he values is the "adhesion", if there is enough of this black fire golden oil, there is a hope to kill the enchantment of the canyon pass, only by attaching to the enchantment, can it produce continuous and efficient damage to the enchantment.

"How many of these Black Flame Shining Star Oil Cities are there?"

"There must be more than 100,000 barrels, but this is only a part, and there are three war warehouses in the city dedicated to storing fire oil. This thing is very useful, just use a catapult to throw it up, and the oil will attach to the barrier, burning violently, and the barrier will be consumed quickly, but it is not enough to break the barrier. The adjutant general said with some regret, among all the city defenses, the most troublesome and the biggest obstacle to the siege army is undoubtedly the city defense enchantment.

Inadequate? That must be the fire oil that attacks the closed at the same time is not enough, how much can the steel skeleton catapult throw it on? Maybe so!

Wu Yi left the combat readiness warehouse and once again found the commander Nan Yongyin, in the mission he was a military advisor, without direct military power, and any ideas needed to be supported by the commander.

"Strategist, you're back! The whole army has been completed, and it will be ready for the march in one hour at most. Nan Yongyin seemed to be in a hurry, and he should have been under a lot of pressure from the emperor.

"Sir, I need to borrow all the Wind Legion magicians."

"Wind Legion Mage?"

"Yes, there are at least 100,000 barrels of Black Fire Shine Star Oil, when the war starts, I will try my best to break the barrier of the canyon pass first, and when the time comes, please don't miss the opportunity." Although he is a military advisor, even if he divides the troops, it will not be his turn, but who made him "versatile"! Anyway, as long as he can capture the canyon pass, his task will be completed, and it will not affect him if he is not in the main army.

He couldn't think of a better way for the time being, so he could only grasp the conditions that he could find.

"How sure are you? Advisor, this is no joke. ”

"Don't worry, even if you don't succeed, you can at least get a certain advantage."

"Okay, there are a total of 130,000 barrels of Black Fire Radiant Star Oil in Feifeng City, just give 100,000 to the military division, and only 8,000 wind legion magicians, if it is not enough, it can be filled with legion magicians from other departments."

"No need, eight thousand is enough! However, I also hope that the commander will change the time of tackling the problem to tonight. "Under the cover of the night, it can get him more opportunities.

"Just listen to the military advisor."

Black Fire Radiant Star Oil is a alchemy product, unlike war equipment, alchemy products can be loaded into space equipment, and the space of the sigh ring can easily hold 100,000 barrels of Black Fire Shining Star Oil. Wu Yi chose the location of the layout on the left side of the canyon pass "Zuowei Peak", the top of the mountain is more than ten zhang higher than the canyon pass, higher than the "right guard peak" on the right, these eight thousand wind magicians don't know how many can survive afterwards.

After receiving the oil oil, Wu Yi immediately took the eight thousand wind legion magicians out of the city and headed towards Zuowei Peak. These wind magicians are all of the ninth order, neither high nor low, the flight speed of the wind resistance technique is much faster than the levitation technique of other magicians, as long as you are careful, now the attention of the canyon pass is on the flying phoenix city, there is a great possibility of a surprise effect.

When Wu Yi and his party arrived at the top of Zuowei Peak, the front army of Feifeng City also went out of the city, and a lot of preparations were needed to attack the fortifications, such as the battle platform needed to be pulled onto the battlefield in advance, and the trebuchet also needed to be placed on the battle platform first, and when the war started, the battle platform was pushed to make the trebuchet enter the range of fire, so it was impossible to surprise the frontal attack.

Wu Yi took out the fire oil first and distributed it in ten different areas for the wind magicians to use at any time. After that, Wu Yi worked hard to portray the formation on the top of the mountain. Wu Yi is a master-level formation mage, and he has mastered a lot of formations, but there are almost no formations that can be arranged in a short period of time and have a strong long-range striking power.

Most of the formations take effect within a certain range, and the effect is that they cannot be separated from the range of the formation, but some auxiliary or enhanced formations can achieve similar effects.

Therefore, this time Wu Yi arranged the "Nine Heavens Divine Thunder Guiding Thunder Array", which he had just mastered not long ago, but it was not complete, but a simplified version, and the complete "Nine Heavens Divine Thunder Guiding Thunder Array" at least required a grandmaster-level formation mage to arrange. As for the role of this formation, you can see it by looking at the name, strengthening the power of the Dao method "Nine Heavens God Thunder Mantra".

Now Wu Yi is most confident in his own combat effectiveness, and he doesn't have many skills in terms of military advisors, so why do he have to complete the task as a military advisor?

Wu Yi's plan is to first attach the Canyon Pass Enchantment with fire oil to form a continuous large-scale sea of fire, and then bombard the Enchantment with the Nine Heavens Divine Thunder to accelerate the consumption of the Enchantment, if Nan Yongyin, who is attacking the key problems head-on, can seize the opportunity, they have the opportunity to directly destroy the Canyon Pass Enchantment in a short period of time, so that the frontal battlefield can directly borrow a cloud ladder to forcibly enter the pass, and advance the battlefield to the Canyon Pass.

At sunset, the sky gradually darkened, and in the face of the menacing Wind Forest Army, the defenders on the canyon pass were also actively making preparations.

"It seems to be going better than expected!" Standing on the top of the mountain, Wu Yi hid his figure with a small concealment array. It's not that the guards of the Canyon Pass don't pay attention to the left and right Guards, in fact, Ling Guo has launched a surprise attack on the Canyon Pass from the top to the bottom of the two peaks more than once, but he has never succeeded. First of all, the main infantry can't participate in such a raid, and Ling Guo has no flying troops, so it can only be completed by a magician with flying skills, but the barrier is not broken, you fly above the canyon pass, that is the target of the city defense, how many people come and die, and the scene is more ugly than attacking from the front, so, after a long time, both countries "ignore" these two peaks!

A round of crescent moon appeared in the sky, the sky became dark, in a firelight, Nan Yongyin commanded the Fenglin Army to launch a strong attack on the Canyon Pass, the defenders of the Canyon Pass, launched a momentum from top to bottom, with an absolute advantage, in order to protect the battle platform, protect the war equipment, the Fenglin Army had to pay greater casualties, Nan Yongyin must also use the strength of the army to resist some fierce attacks.

"Almost!" A slight smile appeared at the corner of Wu Yi's mouth, now the attention of the defenders in the canyon pass is attracted by Nan Yongyin's army, this is the best opportunity!

"For the sake of Ling Guo, everyone, let's go on the road!" These people are absolutely loyal to Ling Guo, even if they know that it is death, they will not hesitate to do it.

"For Ling Guo!" A group of wind mages roared impassionedly, but at this time, a fierce battle was going on, and their voices could not reach far before they were dispersed by the earth-shattering shouts of killing.

Eight thousand wind magicians, two by two, rolled up more than a dozen barrels of black fire dazzling star oil with the "Wind Bondage" and flew towards the outside of the mountain, when they flew to the central range above the canyon pass, when even if they canceled the skill, let the barrel fall downward. When a wooden barrel containing the black fire star oil smashed on the barrier of the canyon pass, the defenders on the gate finally found the enemy above, and the barrel broke under the action of the impact force with the barrier, and the black fire star oil attached to the barrier, slowly flowing downward. The barrier of the canyon pass was like a glass cover, dyed with a large area of black gold by the fire oil, and the incendiary bombs thrown by the catapult from under the pass instantly ignited these fire oils, forming a sea of fire.

At this moment, the canyon pass burned with raging flames, in the sea of fire, the barrier of the canyon pass continued to sway, and the defenders who reacted began to use the city defense to attack the wind magicians who threw oil barrels above, and these magicians were immediately killed, killed and injured countless times.

However, their role has been played, and they are well deserved. The two wind legion magicians joined forces to drive the oil barrel with the "Wind Bondage", which can bring up fifteen barrels at a time, even if each group can only be carried out once, 8,000 people and 4,000 groups are 60,000 barrels, which is definitely a disaster for the canyon pass!

When nearly 70,000 barrels of fire oil were put in, Wu Yi stopped those magicians who continued to send them to death, but in a short period of time, there were less than two hundred magicians left in the Eight Thousand Wind Legion, and the proportion of deaths was exaggerated.

At this time, the canyon pass had been completely engulfed by flames, and Wu Yi stood in the "Nine Heavens Divine Thunder Guiding Thunder Array" and began to guide the Nine Heavens Divine Thunder. The "Nine Heavens Divine Thunder Guiding Thunder Array" can greatly strengthen the skill of the Nine Heavens Divine Thunder Curse, but it is not without drawbacks, in the process of casting, it is very likely that it will also be attacked by the violent thunder, and the more it continues, the greater the chance of being counterattacked.

A domineering Thunder Dragon fell from the thunderclouds above the sky, fell into the sea of fire, and slashed heavily into the swaying barrier of the canyon pass. With the addition of the formation, the power of this divine thunder has definitely reached the level of a demigod. With the fall of divine thunder one after another, the thunder and fire above the canyon pass have covered the scene in the pass.

At this time, Nan Yongyin also decisively gave up protecting the army with the power of the army, but blessed himself with the power of the army, took the lead with the strongest state, and rushed directly to the canyon pass. The super-first-class command and super-unified force, combined with the power of the army, have formed a combat power close to that of a demigod, such a combat power, except for the commander of the other party, no one is invincible!

The opportunity is in front of you, you must not hesitate at this time, if you want to win, you must be vigorous!