The advance of the Nord division is getting slower and slower, on the one hand, the Nord rebels have withdrawn a number of guards from the city to assist in the defense, and on the other hand, the mercenary forces that are burning everywhere are also encountering strong and powerful suppression. The Nord rebels are slowly coming out of the chaos www.biquge.info a steady stream of follow-up troops are rushing to the front line of contact with the Nord division.

"Aim!--launch!" shouted the herald of the Nord Division: "Hurry up! The second echelon is ready to launch, and the first echelon is ready to be wound!"

The explosion made the streets of Tiha tremble like a seriously ill patient.

Although the support of the Nord rebels was very strong, they could not gain a greater advantage in the face of heavy artillery fire, because often as soon as they assembled into a formation, the opponent's sky-breaking ballista had already exploded in the formation, tearing out one terrifying wound after another in the formation.

At first, the Nord rebels were still afraid and hesitated, but after three or four bombardments, they fully adapted.

After all, this thing is just a sharp weapon for attacking the city, on a flat street without high and low angles, if you want to cause a lot of damage in the crowd, you must directly hit the dense crowd, and the whole thing, the speed of reloading is too slow, they just need to disperse, wait for the bombing to end and quickly charge, and then strive to rush into the blind spot of shooting before the next round of bombing begins, and force the battle.

"Second team!fire!" shouted the herald, only to be surprised to find that the expected loud bow sound did not happen.

When he turned his head to look, he found that many of the soldiers in the second team who were responsible for firing were killed by feather arrows, and the lifeless vitality was slowly falling. Blood mixed with brain pulp was spreading out of the wound in his left eye, shocking in the firelight.

"Those damn fellows again!" the herald immediately ordered the archers to keep a look, but as on the previous occasions, there was nothing but darkness on the roofs around them.

This is not counting the first time, these annoying assassins always launch surprise attacks at the slightest of the troops, and those terrifying eagles are accompanied by arrows of death.

On several occasions, when the herald heard the sound of the eagle, it was like ordering a shield to be raised, but the time of their shooting was often chosen at the moment when the two armies met, or at the moment when the ballista fired, and it was impossible to prevent it at all.

When the Nord King had a chance to fight back, and those terrible assassins all disappeared into the darkness, the herald couldn't help but wonder how the other party came and went like the wind in such a dark environment.

"If only Lord Hill were here. The herald sighed, "I hope I can hold out until he returns." ”

The eagle is back!

The herald felt a strong gust of wind approaching his left eye! Tihasi looked down the street, and on a tall building, several dark figures were busy.

"Military division, the troops in the center seem to be unable to withstand it. Ace said as he pressed his legs against the wall, stretching his ligaments and muscles, as he looked at the troops on the street in the distance.

"Hmm. Hill answered, and continued to write the math on the parchment that lay on the floor.

"Can't you yet?" Ace grumbled, "I've been warming up for almost twenty minutes. ”

Ciel smiled and said, "I told you it would take about thirty minutes. But at the same time, he didn't stop his calculations.

Ace looked closer, and saw that the parchment was a complete map of Tiha, down to the layout of the streets, marked by thin lines, and Hill was drawing on the map, occasionally marking the dots with numbers.

Ace asked, puzzled, "What the hell are you doing?" Hey, if it bothers you, it's better not to answer me. ”

Hill said calmly: "It's okay, explaining it won't affect me to continue calculating." ”

"I'm counting the location of these assassination troops!"

Ace smacked his tongue: "This can also be calculated!?"

"I couldn't have figured it out," Ciel replied, "but since I understand how they come and go like the wind in the darkness, I've known that I can calculate where they are." ”

Ace scratched his head: "Huh?"

Hill pointed to his ear, "You listen carefully. ”

Suddenly there was a hawk chirping again, then a few short hawk chirps, and finally a long and a short hawk chirp as the end.

Then, a scream came from a distance, and it seemed that another poor man had been pierced through the skull by a sharp arrow.

"Is it to-sound?" said Ace suddenly understood.

Hill nodded, "That's right! There are three kinds of eagle chirps, long, short, and intermittent and rapid chirps. I call it 'dashes,' and they use these as signals to connect with each other. ”

Hill calculates as he continues, "If my assumptions are correct, this is how they should work. With a leader as the center, set up six to eight groups around the group, and the group should be six to eight people, and one more person in the group should be the leader. ”

The leader signals the deployment to the group leader, with the combination of the first two tones indicating the responding group, the combination of the middle three tones indicating the distance traveled, and the next two tones indicating the direction. ”

At this time, that special eagle chirp sounded again.

"Ace, that's the representative, the third group, three hundred paces due west. ”

The group leader would then give the order to kill or retreat again by chime. ”

Two long beeps rang out.

Hill's finger pointed to one of the blocks: "Here." ”

Sure enough, screams were immediately heard from that location.

"Instead, I can deduce where they are at a certain moment by constantly checking their movements. Ciel raised his head and glanced at Ace: "During this period, I will use artillery fire to suppress those assassins who are about to move from this vantage point." And you, you need to follow the route I gave you at high speed and clean up that leader in one fell swoop!"

Ace clenched his fists, and a crisp popping sound came from between his knuckles: "Understood." ”

Hill finally finished the calculation, and drew a small circle on the map with a pen: "His location, right here, the error should be about fifty meters." How's it going?

Ace stretched his waist one last time: "Time?"

Hill smiled: "The straight-line distance is about eight hundred meters, and the time is only two minutes. ”

Ace put his hands on the ground and was ready to start: "You can give it a try." "The eagle is back!

Hill snorted, "Ace!"

"Yes!" Ace's muscles all over his body changed from relaxed to tense in an instant, and the cracked qi urged the valley to the extreme, and the person rushed straight out like an arrow from the string.

At the same time, Hill judged the direction based on the sound of the eagle's chirping, pointed his finger to an area that had already been divided into the map, and issued an order to the ballistamen, "A2, 100 meters to the east!"

Ace had already burst out of the street, stomped on the shoulder of a rebel, jumped with a kick, and smashed one of the Silver Feathers on the roof with a punch that flew upside down.

Almost at the same time, the Skybreaker ballista exploded on the opposite rooftop, and six or seven members of the Silver Feather team who were just about to shoot were blown to pieces.

Ace didn't slow down in the slightest, and a sliding shovel ran down the roof back into the street, knocking out the rebel soldiers below with a beautiful knee.

The eagle chirped again, and the arrows rained down. Ace picked up the fallen enemy and threw it in the direction of the rain of arrows, and a split second of vision blocking was enough for her to jump onto another high wall again.

Boom! The Silver Feather team members who had just discovered that they had lost their target were accurately hit by the Skybreaker Ballista again.

"B6, one hundred and fifty meters northeast", boom!

Ace threw his back and knocked down the shield armor in front of him.

"C3, 75 meters to the south", boom!