Yu Yunluo said: "I thought that I would have to go to the city of the ninth layer to learn the origin of this mushroom spirit, but I didn't expect to know it on this layer!"

Su Yu said: "The city at this level was built relatively late, firstly, it may be far from the original appearance of the story, and secondly, there is too much content in the story, and the relief has to ignore some details, if you want to understand the truth, you have to go to the lower city." ”

Honggu seconded: "Brother Yu is reasonable, these reliefs ignore the reason why this mushroom spirit can live underwater for a long time, maybe there will be an explanation on the stone pillar inscription outside, I don't know if Mr. You Guang is here? Let's go out and have a look." ”

When everyone left the temple, they saw that Mr. You Guang was indeed looking at the inscriptions on the stone pillars by the light of the statue of the gods.

Honggu stepped forward and said, "Sir, what does the stone pillar inscription say?"

Mr. You Guang said: "It's just some myths and legends, I just looked at the two stone pillars, to the effect that this mushroom spirit suffered a catastrophe 30,000 years ago, and was forced to escape into the depths of the underground, through complex underground caves, and finally reached the sea area around the Six Poison Island......

Then he met the snake god and guided them into the underwater cave to multiply, and it was not until many years later, when the race grew again, that they gradually migrated upwards and built a nine-layer underground water world. Seeing that Mr. You Guang looked away from the stone pillar and looked at her in surprise, Honggu smiled: "We have a general understanding of these things through the reliefs in the temple, and there are still some details missing, such as how long they have lived in the underwater cave, how they can live in the water for a long time, etc., I hope the stone pillar inscription will give the answer." ”

"You said that after they arrived in the waters around the Six Poison Island, I haven't seen it from the stone pillar, wait for me to see. Mr. You Guang turned back to look at the stone pillar just now, and after a while, he said: "Well, it is true that this stone pillar says that after they arrived at the waters around the Six Poison Island from the underground cave, they met the Teng Snake, taught them how to live in the water for a long time, and led them to escape into the underwater cave to avoid the pursuit of the enemy. ”

Honggu hurriedly asked, "What is this method?"

Mr. You Guang shook his head and said, "I didn't say anything on the stone pillar, I'll look back." ”

He walked over to another stone pillar, looked at the inscription on it, and said, "It seems that the answer the princess wants, there is no stone pillar on the stone pillar, and this stone pillar says that they followed the Teng Snake into the underwater cave, built an underwater city there, and settled down, so the Teng Snake became the main god they worshipped." The snake liked a spar and taught them how to refine it, so they extracted it from seawater and seaweed to worship it. ”

Yu Yunluo said: "So, the Qingming Crystal that this mushroom spirit first used to worship the Teng Snake was actually extracted from seawater and seaweed?"

"Well, that's what the stone pillar says. Mr. You Guang went to look at the inscription on the next stone pillar, and then said: "They lived in the city of the submarine cave for three thousand years, and after the population increased significantly, they abandoned the city, began to move upward, and settled in the cave above, built the city, and continued to worship the Teng snake. ”

Yu Yunluo said: "I understand why they planted the giant algae jungle and built the city in it, these giant algae are the raw materials for refining the Qingming spar! and the Qingming spar used to carve the statue of the Teng Snake God in the temple is probably artificially refined!"

Honggu's eyes lit up and said, "Although the inscription doesn't emphasize it, I think it should be like this." ”

Mr. You Guang went to look at the inscription on the next stone pillar, and then said, "This stone pillar says that every three thousand years, they will have a surplus population to move upwards, and the immigrants will build new cities in the upper caverns, and until the city is settled, they have built nine cities at different depths underground. ”

He then went to browse the next stone pillar, and then said: "The content on this stone pillar proves Yun Luo's speculation, every time they emigrate, they almost always look for a large natural cave filled with water at a higher place, first cultivate a kelp jungle in it, and then build a city in it, and the kelp is the main raw material for them to refine the Qingming Crystal and worship the Teng Snake, and it is also their main food source. ”

Honggu frowned: "This mushroom spirit will feed on giant algae? Our mushroom spirit doesn't eat, and needs nutrients, so it connects back to the underground mycelium." ”

Mr. Cicada said: "Maybe this mushroom has obtained some kind of aquatic ability, the mycelium can grow in the sediment at the bottom of the water, and the kelp jungle provides nutrients for their mycelium, not necessarily like us to eat, although the underwater mushrooms are scarce, but they do exist." ”

Honggu was relieved: "When Mr. said this, I was suddenly surprised, there are indeed a few aquatic mushroom species in the Nebula Mushroom Continent, but I have never seen a mushroom spirit with this ability." ”

Hearing that Mr. Cicada Flower mentioned underwater mushrooms, Feng Luqi searched for a moment at the base of the giant algae, and sure enough, he found a phosphorescent mushroom full of fluff on the cap, so he said: "There are indeed underwater mushrooms here!"

When Mr. Cicada and Honggu heard this, they hurriedly went over to take a look, and they were very pleased, Mr. Cicada Flower said: "Although this is not a mushroom spirit, at least it means that the mushroom spirit may have such aquatic abilities." ”

While speaking, Mr. You Guang had already finished reading the inscription on another stone pillar and said: " The inscription on this stone pillar says that in the process of upward migration, they gradually found that there are rich Qingming spar veins in some caves, as long as these veins are mined, they can meet the needs of worshipping Teng snakes, so after the completion of the fifth-layer city, they began to gradually give up using giant algae to refine Qingming spar, but due to the importance of the giant algae jungle to their survival, and then immigrated upwards and established new cities, they still had to cultivate the giant algae jungle first. ”

Yu Yunluo frowned and said, "Then why didn't the city above be built in a cave full of water? Moreover, in the past, every time they immigrated, they only built a city in a cave at a higher level, but on it, they built multiple cities. ”

Mr. You Guang said: "The higher you go, the fewer water holes there are, but their population is always growing, and upward migration is inevitable, so new immigrants have to adapt to the new environment." ”

The Demon Sword thought for a moment and said, "I don't think this statement makes sense, isn't there more than one water hole at the same height? Why can't multiple cities be built in multiple water holes at the same depth to accommodate the new population? Besides, didn't they later return to the underground water world? How can only nine cities accommodate so many people? And the city is obviously uninhabited at the moment!"

Mr. You Guang was stunned for a moment and said, "Brother Jian, I really can't answer these questions, this is already the last stone pillar in front of the temple." ”

Yu Yunluo said: "There are only these three buildings next to the holy well, do we want to take a look at the buildings on the periphery?"

Sima Chengzhen said: "The surrounding area of the holy well is the core building of the city, and it is unlikely that there will be more important records on the periphery, so let's find the artifact components first." ”

So they went down to the holy well.