Qian Yue was still refining the Dragon and Phoenix Sacred Heart in seclusion, and Ji Tianxing did not disturb it.
He left the Sword World with the black dragon and returned to the sky over the East China Sea.
When the black dragon appeared in the sky, its huge body thousands of feet long brought up huge winds, covering the sea with a large shadow.
It let out a dragon roar of joy and circled in the sky before flying in front of Ji Tianxing and Yunyao.
Yunyao showed an expression of disbelief when she saw such a big change in it, feeling happy and relieved for it.
After the two sides chatted for a few words, the black dragon took Ji Tianxing and Yun Yao and rushed towards Donghai Guixu.
Now that the black dragon has reached the first level of the Soul Refining Realm, its flying speed is incredibly fast, and it can travel 120,000 miles a day.
Although, this is not as fast as Ji Tianxing's flying sword.
But its magic power is extremely abundant and its power is long-lasting, even if it can fly continuously for a month, there will be no problem.
…
Five days later, the black dragon carried Ji Tianxing and Yunyao and flew in the northeastern sea.
Below is the boundless blue sea, with scattered islands appearing every tens of thousands of miles.
Yunyao was sitting on the black dragon's back, meditating and adjusting her breath.
Ji Tianxing stood on the dragon's back, looking at the sea ahead, his face becoming more and more solemn.
He frowned, thinking about something.
Suddenly, the black dragon turned to look at him and said in a dull tone: "Old Ji, I feel like something is wrong in this sea area."
Ji Tianxing was interrupted from his thoughts, glanced at it with a somewhat surprised expression, and asked, "You also see the problem?"
"Yes." The black dragon gradually slowed down its flight speed and said in a low tone: "I feel that the water in this sea area seems to be darker in color and is also leaking poison.
I just noticed that there are many corpses of fish, shrimps and water monsters floating on the sea."
Ji Tianxing nodded and said solemnly: "Yes, the seawater in this sea area does contain strong toxicity, and those fish, shrimps and water monsters were poisoned to death.
If my guess is correct, something may have happened in this sea area, and there must be more bodies buried under the sea!"
Black Dragon was silent for a moment and asked with a worried tone: "Old Ji, will the Shui Tribe encounter any trouble? Should we go and take a look?
After all, you and Taiyi are sworn brothers, and I am also a member of the Black Dragon Clan..."
Ji Tianxing just thought about it for a moment and nodded in agreement.
"Okay, let's go to the bottom of the sea to see what's going on. I have a bad premonition, and I hope it doesn't come true."
Yunyao was awakened by their conversation, opened her eyes and looked at Ji Tianxing, and asked: "Tianxing, do you have any bad premonitions?
Do you mean that the changes in this sea area are related to the demons and the Son of Blood God?"
Ji Tianxing nodded slightly and said in a low tone: "Now the Demon Tribe has sent out a large number of Blood God Sons to madly massacre the people of the three tribes, and the Shui Tribe is no exception.
If a son of the Blood God sneaks into the East China Sea and massacres people in the Shui tribe's territory, it will be troublesome."
Yun Yao understood his worries and nodded quickly: "In this case, we will not rush to the East China Sea Guixu. We will first enter the seabed to see the situation."
As her words fell, the black dragon descended from the sky and swooped into the vast East China Sea.
It is like a dragon in the sea. It can move through the vast sea effortlessly and feel like a fish in water.
Moreover, it, Ji Tianxing, and Yun Yao both have soul refining level strength and are not afraid of the poison in sea water at all.
After just a few breaths, the black dragon dived into the sea ten miles deep.
The light in the deep sea is dim, the water is cold, and the pressure is extremely high.
It was deathly silent in all directions, not a sound could be heard and not a single fish could be seen.
Under Ji Tianxing's order, Black Dragon continued to dive to the bottom of the sea.
When it dived to a depth of thirty miles, it finally touched the seabed covered with rocks and corals.
The cold seabed contains rich mineral deposits, many rocks and reefs contain metal components, and luminous aquatic plants all shine with a faint light.
However, Ji Tianxing and Yunyao looked around and found that the coral bushes and aquatic plants on the seabed were all withered and dead.
There are also large areas of fish carcasses piled up on the rocks and mud, most of which have rotted flesh and blood, leaving only their bones.
The seawater contains strong toxicity, and there is black blood and carrion visible to the naked eye, swimming slowly with the current.
The black dragon shuttled quickly across the dark seabed, constantly flying toward the northeast.
During this process, everyone only saw densely packed white bones on the seabed, all of which were the corpses of various fish and aquatic species.
From giant whales with a body length of a thousand meters to fish, shrimps and shells as small as a palm, all were poisoned to death.
Even those water monsters and water tribe people with certain strength could not escape the erosion of the poison. After their death, they turned into rotten bones and lay on the dark and cold seabed.
An hour later, the black dragon traveled tens of thousands of miles across the seabed.
An underwater city appeared in front of everyone.
This is an ancient city with a radius of dozens of miles, located in a flat reef, built from countless huge dark rocks.
The walls and buildings of the ancient city are all wrapped in algae and various aquatic plants, which look quite strange and rare.
On normal days, hundreds of thousands of water tribe people would live in the city, grazing hundreds of millions of fish and shrimps, and raising countless powerful water monsters.
Dense schools of fish, various luminous fish and water monsters will also bring faint light to the ancient city.
Colorful corals will also grow in the ancient city, bringing brilliant colors to the dark ancient city.
Such an ancient underwater city is splendid and spectacular, awe-inspiring and delightful.
However, when Ji Tianxing and Yunyao rushed to the top of the ancient city, they could not see the beautiful scene.
What they saw was just a cold and dark ancient city without a trace of light or colorful colors.
There were only hundreds of millions of fish and shrimp corpses, and the bones of hundreds of thousands of water tribe people and water monsters, piled up everywhere in the city, exuding a permeating cold air of death.
Seeing such a tragic scene, Yunyao and Heilong felt heavy.
Ji Tianxing flew into the ancient city, opened Su Xin Dharma Eyes, released the power of his soul, and carefully explored the situation in the city.
After a while, he probably found out the reason, and said to Yunyao: "Yaoyao, I guessed it right. This ancient underwater city and this sea area were destroyed by the poison."
Yun Yao asked with a solemn expression: "Tian Xing, are you sure that this matter is related to the demon clan and the Son of Blood God?"
Ji Tianxing nodded and said in a cold tone: "I have been exposed to highly poisonous plagues in various coastal cities before, and I even killed the Son of Blood God with my own hands.
I am no stranger to the power of disaster, and I can be sure that this incident is caused by the Son of Blood God and the demons making trouble.
Not only does the seawater contain strong toxicity, but there is also a weak demonic energy remaining, which should be the calamity power released by the Son of Blood God."