Chapter 3108

Then, when the 'ball' rebounded for the fourth time, Xia De had to lower his center of gravity to block it. By the seventh time, the 'Heaton Seal' had been used. By the tenth time, the seal shield was pierced through in one go, and Xia De had to cross his arms in front of his chest to block the attack.

And by the thirteenth time, when the 'ball' rebounded at almost teleportation speed, Xia De had to choose to dodge.

But the black 'ball' did not pass him to pierce the wall of the shop and then destroy a whole street. The black rotating energy group dissipated directly in space.

The mannequin did not launch any other attacks. Its two hands were crossed in front of its chest, and then it made Sylvia's voice:

"Can you see what principle the strange art just now was constructed according to?"

Xia De used the Moon Fire with his left hand to treat the bruise on his right arm, and answered without thinking:

"The golden spiral lines that kept flashing just now, aren't they the Fibonacci sequence?"

Then he remembered that in the current world, the name of that sequence wasn't this:

"I mean the golden ratio sequence.

A large number of natural phenomena such as plant branch and leaf arrangement, pineapple texture and honeycomb structure, sunflower petal arrangement, pine cone spiral structure, snail shell, etc., all follow its wonderful structure. I remember there is even a 'golden ratio' value. The closer the structural ratio in art and architecture is to this number, the closer it is to the so-called 'perfection'."

The outsider still remembered that number:

"It seems to be around 0.618. Every rebound of your attack just now increased in power according to the golden ratio sequence. Can increasing power according to this ratio also achieve the power amplification of strange art?"

The mannequin was silent for a while, then split along the midline of its body, forming a black-gold vortex with a slight buzzing sound. This is the kind of portal Sylvia often uses.

And in the wreckage after the mannequin split, another box appeared. Xia De bent down to pick it up and look. The silk cloth in the box indeed recorded a unique strange art:

"Strange Art - 【Golden Rotation】.

After energy is fired in a specific way, its collision with a solid will rebound. At this time, if you cast a spell to make it rotate and fire for the second time, the energy effect will be enhanced without consuming more spirit. The current limit for rotation times is 22."

The silk cloth completely recorded various details and learning methods of this strange art created by Sylvia herself. In Xia De's view, the disadvantages and advantages of this strange art are equally obvious.

The disadvantage is that it requires a long preparation process, while the advantage is that it can achieve a very strong attack effect with very little spirit consumption.

"Sylvia is really a very creative witch."

After passing through the portal, he left the 'Exquisite Clothworks' shop. The other end of the portal was located in a garden under the moon. Even in winter, there were flowers and green trees in the garden, and one could even see a glass greenhouse flower room with a glass ceiling dyed white by silver snowflakes on the side.

This place should be inside Willandale. Although Xia De hasn't been here, it looks like a private garden of nobles or even royalty.

There was only the sound of falling snow in the quiet garden. The sporadic gas street lamps kept this place from being too dim, but Sylvia inviting Xia De to come here was naturally not to enjoy the snow.

Before long, a clattering sound came, and then a suit of knight armor bypassed the ivy by the garden path and came to Xia De. The armor was obviously empty inside. The witch probably used some power similar to 'Puppet Manipulation' to control it remotely.

"The 'knight' held a standard longsword in each of its left and right hands. It threw the sword in its left hand to Xia De and then made a posture of holding a sword to charge."

"First it was topology, then number theory, this time is it human mechanics or materials science?"

Xia De guessed in his heart, didn't use any strange art to assist himself, raised his sword in the fluttering snowflakes, and with a 'clang~', blocked the knight armor's standard thrusting action.

The power of the armor was not great, and Xia De clearly felt that even if he didn't block this sword, it seemed that it wouldn't hit him.

He was very curious why he had such a strange thought, and then he blocked with his sword again, wanting to see what this armor was trying to do.

The armor was not only weak in power, but its swordsmanship was also truly inferior. Most of the crooked attacks looked standard when the sword was drawn, and indeed aimed at Xia De, but the final position was always off by a lot.

Coupled with the occasional standard sword that could be easily blocked, Xia De lost patience after more than a dozen moves back and forth.

He was just about to speed up his movements to swing away the opponent's sword and then try the strength of that armor, but the armor's sword, which seemed to be another miss, magically stabbed directly into the right side of Xia De's chest.

Even if he dodged in time, only letting the sword tear his clothes, this was still very incredible. That armor was weaker than Xia De from any angle and any data, so this sword theoretically absolutely couldn't hit:

"What is the situation again?"

【Fate.】

'She' answered with a smile as Xia De kept dodging those inferior sword attacks:

【That sword just now was endowed with the fate of 'must hit'.】

"But this sounds like a diviner's method. Sylvia shouldn't understand this. And this kind of 'must hit' often has to bear a price. I find it hard to imagine what kind of price Sylvia has to pay to achieve 'must hit' on me."

'She' still smiled gently:

【Except for that sword just now, most of the previous sword attacks had the fate of 'must not hit'. And, the two seem to have a wonderful balance, like weights on both ends of a balance, maintaining a subtle...】

Xia De, who was dodging backward, suddenly stopped and rushed forward, grabbing the knight armor's sword with his left hand and letting it stab into his chest.

Then with a 'bang~', the longsword exploded on the spot, and then the broken sword and the armor disappeared into the snow like sand.

The familiar box fell into the snow. After Xia De opened it, he saw the truth of this strange art -

【Everything exists as an 'average'. If this is taken as the theoretical core, and 'failure' is forcibly endowed, then 'success' must appear after enough failures.

Strange Art - 【Sword of Fate/Sword of Probability】, when facing a certain object, it must fail before successfully hitting the opponent, but it must succeed after enough failures. If the 'success' event appears early, the weapon and the user will be backlashed by probability.】

"So, she achieved the diviner's method through a different path? After topology and number theory, it's probability theory."

Sylvia's talent is indeed outstanding. Xia De believes that even if she weren't a witch, her future path would definitely go further than most people. But now the more important thing is to take the next step. He has been aroused, and even somewhat looks forward to what kind of power Sylvia will show later.

After the knight armor failed, no other abnormalities occurred, so Xia De tried to use his reconnaissance strange art to observe the surroundings. 'Blood Echo' let him see the glowing bloodstains stretching into the distance on the garden stone path.

He followed the bloodstains forward in the garden, and after five minutes, turned into a glass flower house. This is actually a greenhouse. The heat provided by the steam pipes ensures that those plants that are not adapted to winter temperatures can bloom in winter.

Surrounded by blue and red roses, a blackboard was placed abruptly in the center of the greenhouse. After Xia De illuminated it with the silver light from his fingertips, he found that the chalk marks on it were Sylvia's handwriting:

【The answer to the last test is in this equation: (x^2+y^2-1)^3=x^2y^3 - Emma Sylvia】

"This..."

Although they were all knowledge that could be considered cutting-edge for this era just now, this equation seems a bit too simple. Although one could tell at a glance that this equation couldn't be solved, the outsider remembered that after it was drawn in the coordinate system, it seemed to be a heart-shaped pattern.

So, amidst the light laughter of 'She' in his ear, Xia De picked up the chalk in the blackboard slot, and around Sylvia's signature, drew a heart shape, which was to include her name in the 'heart':

"However, is it really that simple? Could it be that I missed some clues?"

He thought so when he put down the chalk, but the fact is, it is just that simple -

"Faster than I thought, Xia De. Could it be that other girls told you the meaning of this function before? Otherwise, how did you recognize it at a glance?"

The voice appeared from behind the blackboard, and the young black-haired girl walked out with her hands behind her back with a smile. Xia De couldn't explain the things in his hometown, so he just said:

"You know, I've always had some research on mathematics."

The black-haired girl smiled reservedly surrounded by roses. She really didn't misjudge the person:

"Then please evaluate my research results. How about the knowledge I showed you?"

"Your attainments in topology and number theory are profound. Although the mathematical principles involved in the 'Sword of Fate' are very simple, you can combine probability theory with strange art, which is enough to show that you are not just an excellent theoretical researcher."

Xia De didn't skimp on his praise, but Sylvia asked again:

"I originally thought my difficult problems could cause you trouble, but from the time I locked the basement door until now, less than twenty minutes have passed. May I ask, are you praising me, or praising yourself?"

"Of course, praising you."

This is sincere, because the outsider's knowledge is learned, while Sylvia's knowledge is researched by herself:

"You aren't planning to use these difficult problems to test me, and then let me be your apprentice, are you?"

He asked again, and Sylvia looked at him with a smile for a while before slowly shaking her head:

"Of course not. If I used these problems to test apprentices, I wouldn't be able to find a suitable apprentice in my life. We can't ask other people in the world to be as smart as us."

She reached out and pushed the blackboard, throwing it into some unknown corner, and then threw the knight sword that Xia De was still holding into the flower bushes.

The witch held Xia De's hand:

"Anyway, only half an hour has passed. Margaret won't be back for a while, let's go to other places to wander around. This time, it's the last stop."

PS: Adding more updates, asking for votes!!!

(End of chapter)