As for what kind of problem did Cao Ke give to hilnas, it's going to turn the topic to the defense of tongchui pass! After the careful arrangement of Cao Ke and the full cooperation of the elves and the Tongtian Empire, the defense facilities closed by the bronze hammer can be called the most luxurious in the Lingtian continent! However, for these, Cao Ke is not satisfied, after all, he has to face the opponent is fearless and powerful zombie Legion. According to Cao Ke's calculation, there must be some additional defense measures in tongchui pass, which can further improve the overall defense level of tongchui pass!

For this problem, Cao Ke had thought about it for a long time, and even thought about copying the weapons of the earth's advanced civilization to Lingtian continent! You can imagine that if the coalition forces are equipped with powerful guns, the zombie Legion will be screened every minute? Where can we use experts like Cao Ke and Yang muyao to kill tens of millions of zombie soldiers one by one? However, such an idea can only stay at the ideal stage, because when Cao Ke was on earth, he was just a fighting gangster, not a weapon expert. His understanding of advanced weapons was just a few eyes on TV. If he was asked to build weapons, Cao Ke could only build a shell according to the same pattern, How can we expect the coalition to fight the zombie army with these shells?

Cough... Our topic is a little far away. To get back to the point, the problem Cao Ke has thrown at hinas is actually to let hinas think of an effective defense method. Moreover, this defense method must not conflict with other defense facilities of tongchui pass!

Yes, that's all that Cao Ke asked for! As for the power of this defense method that hilnas came up with, TSOK did not mention a word! It's not that Cao Ke intentionally reduces the difficulty of hilnas, but that Cao Ke understands that, limited by the level of civilization and science and technology, hilnas wants to make a breakthrough on the basis of Cao Ke's existing defense facilities, which is a very difficult topic. If there are any requirements for power, it's simply unrealistic!

When Jessica receives the reply from zouk and sees the problem described in the letter that needs to be solved by hinas, Jessica can't help frowning and complaining that zouk is deliberately creating difficulties for hinas and throwing away such a problem that even she can't solve. Isn't it that Jessica is clearly rejecting hinas's request to become a teacher?

After repeated letter negotiation, a week later, some impatient Cao Ke made a decision to settle the matter. Before he came back from star lake this time, hinas had to finish the topic he told him. Otherwise, nothing could be said. Even Jessica didn't have to plead for hinas!

In desperation, Jessica can only take the last letter of Cao Ke's reply and come to hilnas. She explains the meaning of Cao Ke to hilnas in detail and asks whether hilnas is willing to accept the test from Cao Ke and Yang muyao?

As soon as she heard that Cao Ke wanted to introduce Yang muyao to her as a master, she almost jumped from the highest window of the fairy palace! What is Yang muyao's strength? Of course, hilnas knows. With Yang muyao's teaching, hilnas is sure that her growth is absolutely by leaps and bounds!

Almost did not even consider, hinas quickly nodded, like picked up a baby general took Caoke's challenge! Jessica saw that hilnas was so determined that she didn't say any more. She just said some words of encouragement to hilnas and left her house.

In the following period of time, helnas simply resigned from the position of commander-in-chief of the Elven guard, and concentrated on studying the defensive means that could be used to close the bronze hammer at home. Cao Ke has said that this problem must be solved before he comes back from the star lake. She has no way to judge when Cao Ke can come back. All she can do is to speed up her speed as much as possible!

However, this kind of thing is easy to say, but quite difficult to do! When helnas got the defense map of bronze hammer pass from Jessica, she really understood the real reason why Jessica was in a dilemma! If tongchuiguan is a soldier, Cao Ke has equipped it with the most gorgeous and hard armor! "Armed to the teeth" is the most appropriate way to describe it. There is very little room left for her to play! A few days ago, hilnas could only sit on the bed in a daze holding the defense map, because she couldn't find a place on the wall of tongchuiguan, and could or should add some more facilities to strengthen the defense!

It's a much simpler question if you push it in, but can hilnas do that? Of course not! Hard plug defense facilities, not only will not play any role in strengthening defense, but will have a serious impact on other defense facilities! This counterproductive approach, without Cao Keming said, will automatically shield hinas! If helnas really takes this method to deal with Cao Ke, then she will only suffer the loss in the end!

Time is pressing, and we can't take a shortcut. Helnas can only place her hope on the ancient books left by the elves for thousands of years! Her head can't come up with the answer to the problem out of thin air. Maybe she can get some effective inspiration from those ancient books!

In this way, the whole person of hinas was immersed in the Royal Library of the elves! For five consecutive days and nights, I didn't eat a mouthful of rice or drink a mouthful of water. I just flipped through one book after another, watching and thinking Fortunately, hinas is an elf whose body can automatically absorb the energy of nature to replenish its own consumption. If it is replaced by an ordinary human, if it doesn't eat or drink for five days and five nights, it won't die directly?

As the saying goes, heaven rewards hard work, and hard work pays off. In a book called the ten years' war between elves and orcs, hinas finally saw a very humble detail!

This book "the ten years war between the elves and the orcs" mainly tells the story of the elves and the orcs fighting for the city of Koster more than 300 years ago and the province of Koster where the city is located! The elves and the orcs have been enemies since ancient times, and Koster province was one of the elves' territories closest to the orcs' territory at that time. Therefore, the two sides have fought each other countless times in Koster Province, and the sovereignty of Koster province has undergone hundreds of changes. There are many war stories in Koster province, She didn't know about the ten years war between the elves and the orcs before, and it's totally reasonable. It doesn't mean that her military knowledge is insufficient!

It is mentioned in the book that in that year, the orcs sent 100000 troops to attack the city of Koster. At that time, it was the 10th and 13th legions of the elves who were in charge of guarding the city of Koster, while Raul and Jiuli were the commanders of the 10th and 13th legions of the elves.

According to the establishment of the Elven army, one Legion can have a maximum of 100000 troops. Two legions mean that the number of Elven guards in Koster city is twice the number of orcs attacking! In the siege war, the defending side has a certain advantage. Now the army of the elves is twice that of the orcs. It's not easy to fight this battle!

Because of this consideration, Raul and Jiuli decided to send 150000 troops out of the city first to give the orcs a head-on blow, so as to defeat the orcs' prestige and morale!

However, Raul and the two of them still made the mistake of belittling the enemy and rushing forward. How could the orcs, who attacked fiercely, not investigate the real situation of Koster city in advance before launching their own attack? The orcs know that there are 200000 elves in the city of Koster! And the reason why they only sent 100000 troops is that they want to lead the snake out of the hole, and then ambush them to give the arrogant spirit the most fatal blow!

When Raul led 150000, that is, a half legion of elves to rush out of the city and fight with the orc army, the orc army soon showed signs of defeat because of the absolute inferiority of the number. Soon, the whole Orc army began to retreat to the vast forest opposite the city of Koster, throwing away their armor all the way, It seems very hasty and embarrassed.

Seeing this, Raul, who had been on guard in his heart, completely put down his heart and ordered the whole army to chase the orc army, so as to cause the greatest damage to the orc army!

However, what Raul never thought was that the defeat of the orc army was just a trick to lure the enemy into depth! Just as Raul's troops came to the edge of the woods, the orc soldiers, who were in sight, turned around and killed them one by one! At the same time, from the valley on both sides of the forest, two large numbers of ORC troops rushed out, forming a situation of three sides encircling the Elven army in an instant!

It was not until then that Raul knew that he had been ambushed by the enemy! In a hurry, Raul could only order a retreat. In this way, the pursuit of ectopic, from the original spirit to run after the orc, now the orc to run after the spirit!

This time, the loss of the elves is too great! Other orcs "escape", that is to lure the enemy, although the formation is scattered, but the morale is not scattered, combat effectiveness is not scattered! So the orcs didn't suffer much. On the contrary, the escape of the elves was completely based on the surprise of being beaten and the panic in their heads! Fierce orcs, in the eyes of these elves, have become hungry wolves who choose people to eat! Back up, that's really hate mom and dad gave birth to two legs! Let alone resist, all the people have only one idea in their hearts, that is, to run back to the city of Koster, so that they can be saved and safe for the time being! As for the death of the companions, no one can care! Because at that time, everyone was completely flustered