Xia Yulong has a natural love and sensitivity for the mural, he tried his best to decipher the hidden story behind the mural, but the mural was still covered by some unfinished smoke, in order to fully understand the need to shovel all the dust, Tongtian eyes, a bloody battle appeared in the mural from time to time, he was impatient.

Zhang Xian saw Xia Yulong's thoughts, she took out her sword and flew up, a few ups and downs, and then scraped the smoke and dust on the mural clean, and the blue core used a fireball to suspend in front of the mural, illuminating the mural brightly.

Xia Yulong saw clearly that the first picture of the mural was a group of people wearing scale armor, with water chestnuts on their heads and hideous faces crossing barriers, and then there was a picture of heaven and earth, with immortals guiding the way, villagers working, evil ghosts redressing grievances, and yin and yang executioners slaying monsters.

This was followed by a picture of a battle of thousands of troops, and among the thousands of troops, those strange people in scale armor were occasionally seen mixed in, and the scene of the battle was extremely tragic.

Then, snowflakes fell under the sky, the heavens and the earth were frozen, and a large number of soldiers were frozen to death in the wilderness, and their bones were all over the field.

An old man in a robe with a kind face descended from the sky, holding a golden bell in his right hand, and ten thousand people knelt down in front of the old man, holding something heavy like a brick in his hand.

Then a pile of fires was lit on the earth, which roasted the frozen earth for thousands of miles, and another battle began, the world suddenly reversed, and the earth trembled, and when I looked down, those strange people in scale armor passed through the barriers and disappeared into the kiln wall.

Zhang Xian looked at the mural and said, "Isn't this a picture of war?" The two armies fought, and then it entered the winter, and many people froze to death, and the fairy father-in-law descended from the sky, gave them clothes, and then they defeated the strong enemy, and the world was peaceful......"

She paused for a moment, pointed to those strange people in scale armor, and said, "It's just that these people are so weird, I can't see it, they won't be immortals who came down to save the world, right?" ”

Lan Xin and Zhang Xian had roughly the same opinion, she looked at Xia Yulong without saying a word, just waiting for Xia Yulong to say his opinion.

Xia Yulong stared at the giant painting intently and said, "These strange people are not necessarily immortals, they are likely to be visitors from outside the world. ”

Zhang Xian was a little puzzled and asked, "How do you know that they are visitors from outside the world?" ”

Xia Yulong looked at the first picture and said: "You see, these strange people are guided by the Pisces constellation to break through the Tianxuan barrier, and the Tianxuan barrier in this circle is actually the dividing line of each universe, there are three circles here, they must have crossed the ...... of the Three Universes."

Lan Xin let out an "oh" and said suddenly: "I remember, on the top of Lingshan Mountain, my brother took the Cosmic Rubik's Cube in his hand, and a magic cube is a meta-universe, and there are three circles on this mural like a cosmic Rubik's cube, which is the three-universe universe." ”

Xia Yulong nodded "yes" and said, "After arriving at the universe where we are, they went straight to the galaxy, and then they invaded the Three Realms under the guidance of the Big Dipper, and the Three Realms were devastated because of them......

"Wait...... Wait......" Zhang Xian interrupted Xia Yulong's words, "This mural only depicts these weirdos breaking through the barrier, and nothing else, why does my brother know that those weirdos are guided by the Pisces constellation?" ”

Xia Yulong replied: "I saw in the eyes of Tongtian, these strange people are looking in the same direction together, and the front is the constellation Pisces, so your eyes naturally can't see it." ”

Zhang Xian asked again: "We have never heard of this Pisces constellation, and it seems that it has not been recorded in ancient books, why can my brother call its name?" ”

Xia Yulong said with a smile: "I also said with its shape, this constellation looks like two fish playing, so I named it Pisces Constellation, just like the Big Dipper, I also gave them another name called Spoon Star, you can see the Big Dipper, right?" He pointed to the Big Dipper in the Three Universes.

Zhang Xian said "um" and said with a smile: "I really don't pay attention to it on weekdays, this Big Dipper is really a bit like a spoon." ”

Lan Xin also said: "Brother, on Lingshan, you said that the handle of the Big Dipper is exquisite, the handle of the Big Dipper points to the east, the world is spring, the handle of the bucket handle, the world is summer, the handle refers to the west, the world is autumn, the handle of the bucket refers to the north, the world is winter, the handle of the Big Dipper on this mural is pointed to the south, it was summer at that time, right?" ”

Xia Yulong replied: "I watch the sky day and night, the handle of the Big Dipper is different with the change of seasons, grandpa said, from ancient times to the present, the Big Dipper is the coordinates of the celestial pole to guide people's work, and the position of their north is eternal. ”

Zhang Xian snorted lightly and said, "I didn't expect that this Big Dipper has a lot of knowledge, but I am lonely and unheard." ”

Lan Xin smiled: "My sister's medical skills are much more powerful than ours, and she specializes in the art industry." ”

Zhang Xianle was happy, holding Lan Xin's hand and giggling with a red face.

Xia pointed to the mural and said: "Look here, there is a dustpan under this mural, the scale on it is very balanced, like a time table, an ancient book collected by my grandfather mentioned that the ancestor of the ancient mountain had a time wheel, also known as the time table, which can be traced back to the beginning of time, and can be calculated to the end of time, but unfortunately the method and steps of estimation have long been lost." ”

Blue Core seemed to have discovered something new, and she took a step forward and said, "Brother, you see, there is an arrow on one of the scales on this roulette wheel, which is pointing to the battle map on the mural. ”

Zhang Xian continued: "Could it be that the time of the battle on the mural is the time on this scale?" ”

In fact, Xia Yulong has already seen the arrow on this scale, he is trying to calculate the time on the scale, but unfortunately his cognition is still very limited, but in the eyes of Tongtian, he saw a brief history of deep space, in deep space, there are strange words similar to graphics on each scale, these words are magically changing, reincarnating, and the speed of rotation is as fast as the speed of light, but no matter how they change, they finally returned to the original model, and it seems to have experienced a cycle of time.

Xia Yulong didn't blink his eyes, he was completely trapped in it.

Lan Xin and Zhang Xian knew that Xia Yulong must be studying something again, and they stood quietly, not even daring to let out a breath.

After a while, Xia Yulong sighed lightly with relief, looked at Lan Xin and Zhang Xian and said, "I finally understand, you count and see, there must be sixty scales on this roulette." ”

Zhang Xian and Lan Xin carefully counted the scales on their faces, and said in unison: "It's really sixty scales." ”

Xia Yulong was overjoyed and said: "This Tongtian Eye really helps me, the sixty scales on the roulette wheel correspond to Jiazi, Yichou, Bingyin, Ding Mao sixty Jiazi, whether it is deep space time or Three Realms time, it is sixty-one reincarnations, this first scale is the year of Yuan Jiazi, that is, the beginning of time, the last scale is the year of Yuan Jiahai, that is, the end of time, and then with Jiazi as the starting point, time is reincarnation, there is no end, there is no starting point, ancient books record, Yuan is the beginning of Tianzun, The time on this roulette wheel dates back to prehistoric civilizations. ”

Although Xia Yulong's words made Lan Xin and Zhang Xian confused, when they heard the words "prehistoric civilization", their faces showed excitement and surprise.

Zhang Xian held his breath, looked at the mural in front of him that hid the mysteries of deep space, and asked softly, "Brother, is this...... Is the mural really about prehistoric civilizations? ”

Xia Yulong nodded resolutely, and said: "The span of time on this roulette wheel is 100,000 years, and it may be even older if it is today, this arrow points to the year of Yuan Ding Mao, and I conclude that what this mural says is about 400,000 years ago before history." Alas, it's a pity that I don't know much, and I only have a rough look, and I can't calculate this brief time table. ”

Although there are still deficiencies in the reasoning of prehistoric civilization, Xia Yulong explained the mystery in the cave kiln with one sentence, and the picture of the invasion of the third metaverse took shape in his mind.

After careful reasoning, Xia Yulong finally chose the place of the cosmic battle on a wild grassland in the northwest corner of the cave wall.

"This place has a wide field of vision, and it is the most suitable for the decisive battle of the large army......"

Xia Yulong was quite proud, and walked under the cave wall with steps, only to see the picture of the wild grassland vivid, and a golden-haired marmot jumping around on the grassland, very cute.

Even more incredibly, the groundhog jumped up to him and talked to him.

The groundhog rolled his eyes with a grunt, stared at Xia Yulong and asked seriously: "Why did you choose the place of the decisive battle in my homeland, you don't love animals, you don't love nature!" ”

"This ...... This ......"

The ashamed Xia Yulong was speechless, even small animals know how to love nature, not to mention that he is a human being?

Lan Xin and Zhang Xian walked up together......

Zhang Xian asked, "Little mouse, where do you say it's most appropriate?" ”