After visiting the outpost with Blake, a few more days later, the light blue watchtower on the fort was completed.

At this time, Tianxuan packed his bags, leaving 10,000 people stationed here, and the other 40,000 returned to Lanmian City. At this time, according to his representation, the time limit was less than 20 days. After returning to Lanmian City, Wu Xiang made him a simple pick-up and dust, and it was not as powerful as he imagined.

When the meal was over, Tianxuan returned to his residence alone. Somewhat tired, he climbed three floors to the door of his room.

"Wait!" Tianxuan called out to himself in his heart, because at this time he found that his door was unlocked, and there were some strange sounds in the room.

So, he slowly pushed the door open, but then the sound in the room immediately disappeared.

"What's going on?" Tianxuan muttered quietly in his heart.

After all, he still had to go home, so Tianxuan tiptoed and looked around. When he found the switch and turned on the light, he was immediately stunned by what he saw.

"This is ......" Tianxuan was stunned in place, wanting to say something for a while but was stuck. It turned out that when he left Lanmian City before, his home was still very simple: the ground was just some ordinary floor tiles; The walls are just plain wallpaper; The ceiling was also just plain painted; Something else might be simple furniture.

And now, the whole house has changed drastically: I saw a green lawn on the ground, which is dotted with small yellow flowers; Looking around, there are a few willow trees sparsely standing by the river; Overhead, there is a blue sky and white clouds, and the sun shows half of its head slightly.

“Oh，MyGod！ What the hell is going on here? Tianxuan shrugged his eyebrows and kept blinking to himself.

"Hey, Tianxuan!" At this moment, Nicols suddenly appeared out of nowhere, jumped up to him and greeted him excitedly.

"Ahem!" Tianxuan bent down and coughed a few times, then panted and half-squinted his eyes, looked at Nicos and said, "My eldest lady! You're scaring me to death! With that, he stroked his chest and straightened up.

"And me!"

"Nani?" Tianxuan looked back, and the black Katy, who was combed in a cloud bun and had his hands flat on his chest, appeared in front of him, which startled him again, making him shake his shoulders and his body stunned.

"Are you happy to see us?" Nicolas tilted her head and looked at Tianxuan with a smile and said.

"Hmm!" Tianxuan made an embarrassed face, stepped aside, and said coldly, "Happy, I'm so happy!" I'm so happy that I don't even know what to say! ”

"Really? There's more to come! Nicos said with a wink at Tianxuan.

"Nani? And there's more! Tianxuan said with a sad face.

"Alright! Nicos, don't make a fuss! Black Katy walked up to Nicos, shook his head lightly and said, "Tianxuan has just come back, he must be tired, don't stimulate him today, let him calm and calm!" ”

"Hey! It's still Black Katy! Tianxuan breathed a long sigh of relief, closed his eyes and said with a smile.

"Of course! This time, I'll make a note of it, wait for you to rest for a few days, and then I'll give you a bigger surprise! Black Katy said with her eyes closed, the corners of her mouth curled upward, and she smiled sweetly.

For Black Katy's sweet smile, Tianxuan didn't think it was beautiful, but he felt that his scalp was a little numb, and he swallowed it hard in his throat, and then sighed and said, "Oh, that's for sure, I'm waiting for you at any time!"

After slowing down, Tianxuan looked around at his residence, and found that from the entrance to the bedroom, there was a fresh wood-like scene:

The first is the living room, flanked by neat rows of golden elm trees, whose golden branches are dotted with fluffy golden leaves, and on the ground are golden leaf-paved roads. It's a warm scene.

The second is the study, where waves of clear river water continue to ebb and flow to the shore, and workbenches and chairs are set on various strange-shaped stones by the river, making people feel a sense of tranquility and refreshment.

Then there is the bedroom, where the fluffy bed sits under a deep starry sky. The sky was blue, with countless stars blinking incessantly, and the ground was constantly floating pale blue weeds. This look immediately makes people feel like they want to lie in bed and be quiet in it.

Next is the bathroom, which looks like a Huangguoshu waterfall......

After seeing Nicols and Black Katy's elaborate arrangement for herself, Tianxuan was very moved, although she was very happy in her heart, her eyes were a little moist, and she didn't know what to say for a while.

"What's wrong? Tianxuan! Hei Katy looked at Tianxuan's appearance and was very strange, so he stepped forward and asked.

"Nothing! It's nothing! Tianxuan hurriedly rubbed his eyes with his fingers, and then pretended to be calm and said, "Your arrangement is so beautiful, I didn't react for a while." ”

"Huh! I knew you liked it! Nicolas crossed her fingers and said happily.

"Thank you for your hard work!" Tianxuan nodded and said solemnly.

"Don't be so polite!" Black Katy's face flushed at this time, and he lowered his head slightly and said, "You saved me desperately in the Twilight City before, and you haven't thanked me yet!" Let's use this as a thank you gift! ”

Tianxuan looked at Heikati, rubbed his nose with his fingers, and then smirked.

"Smack!" Nicolas slapped Tianxuan on the back.

"What's the situation?" Tianxuan was stunned for a moment, and hurriedly turned around and asked.

"Patronizing Xie Hei Kati forgot about me!" Nicolas pouted and said with some annoyance.

"How can that? Forget that no one can forget Miss Nicos, who combines beauty and wisdom! Tianxuan quipped.

"That's pretty much it!" Nicos said as she folded her hands behind her back and leaned sideways.

After coaxing the two girls for a while, Tianxuan carefully touched the wall and the ground, and then asked Nicos: "Nicos, I want to ask, this floor feels like it's not made of bricks but it's not made of paper, and the wall is not wallpaper, what is it used for?" ”

"Leather!" Nicolas said.

"Oh! I see, no wonder the texture is so soft! Tianxuan sighed.

"And that's not all! If you feel tired of watching the picture here, you can change the taste! Nicolas said with a smile.

Tianxuan hurriedly waved his hand and said, "No, no!" It's too much trouble to let you decorate again! ”

"Huh?" Nicols' eyes widened and said, "You don't need to decorate anymore, you can switch it!" ”

"Switch?" Tianxuan was stunned when he heard this, and he couldn't understand why.

Nicolas smiled, ruffled her hair and said, "Just watch!" Immediately, she flipped a switch in the corner of the living room, and then the wall, floor and ceiling fluctuated like a blind.

"Wow!" Tianxuan exclaimed. It turned out that Nicos flicked the switch so gently, and the golden elm forest instantly turned into an idyllic forest path.

"See! It's easy to switch down! Nicolas shook her fingers again as if she were preaching, "This is a three-dimensional picture leather, which can see different images from different angles, and its readability is very strong, and the propaganda function is magical." The visual effect of the card can be a three-dimensional effect of depth, or it can have the visual effect of scaling, displacement, and rounding, which is completely different from the general graphic design. ”

"Oh! I see! I'm kind of teachable! Tianxuan nodded and said.

"Then, let's take a look at the bathroom again!" With that, Nicos pulled Tianxuan to the bathroom again. This time, I didn't hear the "click" of switching, but the lights around me suddenly changed color. As a result, the entire bath magically transforms from a waterfall into a hot spring with water vapor coming out everywhere.

"Huh!" Tianxuan's eyes widened and he asked happily and in surprise, "Nicos, how did you come up with this!" ”

Nicolas grinned and said, "You touch the ground!" ”

Tian Xuanleng paused, then squatted down to touch the ground, and found that the floor tiles were still laid on it, and there was no leather like the living room and bedroom. So, he couldn't help frowning and said, "Eh! There's no floor leather on it, so why can I switch the screen? ”

"Hee-hee!" Nicolas laughed but didn't say a word.

"Wait!" When Tianxuan was wondering, as if he had found something, he rubbed his palm on the ground for a while, and remembered the light that changed as soon as he entered the door. Then, he raised his head suddenly, his pupils dilated, and said in surprise: "I understand, the unevenness on the ground, coupled with the changing lights, has caused a visual change effect, right?" ”

"Well, you're right! That's it! Nicolas replied with a smile.

Then Tianxuan stood up, washed his hands, and then closed his eyes and reviewed the scene just now, remembering that there seemed to be such a similar thing on the ground.

Indeed, it is a kind of toy that I often played with when I was a child - three-dimensional cards, also known as 3D three-dimensional transformation cards, as long as the sun keeps changing direction, you can see different patterns.

If you make a schematic diagram, you can explain it like this: the cross-section of the plastic sheet is a row of semicircular shapes, and a picture is prepared to be pasted on the plane.

Then cut the two pictures (A and B) into dozens of thin strips of equal width, and follow the following lines: A1, B1, A2, B2...... The order of An and Bn is recombined into a new picture and pasted on the flat surface of the plastic sheet......

In the end, the two directions A and B are drawn in completely different directions. In fact, due to the refraction of light by the semicircular plastic sheet, there are many angles from which you can see pictures A and B, but between the two angles from which you can see picture A, there must be an angle from which you can see picture B. In other words, the angles from which you can see the two images are separated from each other.

Nicolas and Black Katy, on the other hand, borrowed from the technology of ancient Sas optical lenses, revealing different patterns under different colored lights. The parts that are hidden are because they absorb the wavelength of the light that comes from the irradiation, and do not refract the light of the corresponding color.

"You're bothered!" After Tianxuan understood everything, he stretched out his thumb and praised Nicolas and Black Katy.

"Alright! It doesn't have to be that way! Are you hungry? Let's eat first! Black Katy said softly.

"Oh! Are you a little hungry and you've already burned it? Tianxuan asked.

"No! We didn't do it! Black Katy said with a wink.

"Hey! All right! Tianxuan shook his head helplessly and said, "Just let me cook it myself, but don't blame me for not being delicious!" ”

This book is derived from reading the rim