It was not common water. It was at least 100 degrees Celsius below zero. However, it didn't freeze; instead, it was still fluid. Additionally, it could corrode his protective battle qi. Zhang Tie had to swim at the bottom of the pool while replenishing his protective battle qi.
The pipes in the pool were like a maze. They were connected to many pools of different sizes. Zhang Tie would see one in a few minutes. There were bizarre crystal-like black sands at the bottom of those pools. It seemed that they were used to plant something. In some pools, Zhang Tie even found some withered and broken rhizomes which were as thick as two people's arms. They had been soaked in the water for many years. The moment Zhang Tie touched them, those rhizomes would turn into powder drifting in the water.
The density of the water was very high, several times that of mercury. Moreover, the water pressure at the bottom of the water was very high. When swimming in it, one couldn't speed up even if they wanted to. Every step forward and every step would consume a lot of energy. If it was an ordinary warrior, not only would they be crushed by the huge water pressure, they would also be unable to move even an inch even if they wanted to.
If not for Tang Mei, Zhang Tie didn't know where he would end up in such a maze of water pipes.
The two of them swam underwater for about eight or nine hours before they once again entered the bottom of a larger pool through the labyrinthine network of pipes.
In other words, it was more like a lake than a pool. Zhang Tie found that the bottom of this lake covered tens of thousands of square meters and was over 100 m deep. The entire lake was filled with bizarre water. The water in those pools should flow from this lake. The black sands at the bottom of this lake were thicker. Additionally, those broken rhizomes were thicker. Many rhizomes were as thick as 4-5 people's arms. Swimming in such a lake, Zhang Tie felt like strolling in a primeval forest where only tree stumps were left.
"Where are we going?" Zhang Tie asked Tang Mei using battle qi.
"The opposite bank …" Tang Mei pointed at the front. Zhang Tie nodded as they swam towards the opposite bank of the exit.
When he swam to the middle of the lake, he caught sight of a huge skeleton among the black sands and broken roots at the bottom of the lake.
The ghastly white skeleton was over a hundred meters long, and it looked like the skeleton of a snake. However, there were four limbs below the skeleton, and it was lying on the ground. Moreover, the head of the skeleton looked like a bull, and on top of the 'bull' head, there was a pair of horns that looked like those of a deer.
At the sight of this skeleton, Zhang Tie became stunned at once. Even though he had not seen a real dragon, at the sight of this skeleton, Zhang Tie could imagine what it looked like when it was alive. Undoubtedly, it was a real dragon, the dragon in the totem of Hua people.
As a Hua member, when Zhang Tie saw the true symbol of the totem for the first time, he was so shocked that he couldn't recover his composure for a long time.
Tang Mei didn't feel strange about that. However, Zhang Tie directly swam to the side of the dragon skeleton and teleported it into Castle of Black Iron. After that, he continued to swim towards the other side of the lake.
In Zhang Tie's eyes, the dragon skeleton was also a rarity of great significance.
After reaching the other side of the lake, the two people floated to the water surface. Zhang Tie exposed his eyes out of the water as he stealthily looked around.
This lake was located in a huge space in the belly of Buzhou Mountain. There were some similarly damaged buildings on both sides of the lake. Each of these buildings was forty to fifty meters high, like a magnified snail shell, with pointed roofs and spiral-shaped main bodies. These buildings were flashing with faintly discernible runes. Many of these buildings had been smashed into pieces, like glasses that had been smashed by a huge hammer, damaged beyond recognition.
There was a gate in the direction where Zhang Tie and Zhang Tie swam out of the underwater pipeline. The gate was tightly closed. The bank of the lake was facing a bizarre forest. Each tree in the forest was higher than 100 m like a skyscraper. The reason why Zhang Tie could identify those were trees was that all the trees were collapsed or inclined towards the same direction. Many of the collapsed trees exposed their roots and huge pits on the ground.
This strange forest seemed to have also encountered a catastrophic fire. All the trees had been burnt black, and many of them had been completely broken or fallen. There were very few trees that could still stand. The surface of the trees had been burnt black, and many had been seriously carbonized. In the entire forest, not a single tree survived. It was as silent as a graveyard.
What counted most was that Zhang Tie didn't find any trace of deities' battle puppets or those collapsed corpses in those ruined buildings or inside the woods.
'It should be safe here for the time being.'
Zhang Tie jumped out of the water and landed on the bank of the lake. Tang Mei also jumped out of the water and landed on Zhang Tie's side. Watching this pitch-black forest, Tang Mei faintly frowned as she shook her head and uttered, "Pitiful, I've not imagined that it would be like this …"
"What's pitiful?"
"According to the historical records in Emperor NvWa's Palace, these trees are very precious heavenly sandalwood. They have many marvelous effects. Previously, I thought there might be one or two heavenly sandalwood in this forest. It seems that none of them survived!" Tang Mei said pitifully.
"Where are we going?"
"Let's find a place to settle down in this forest and take a rest. After that, we will pass through this forest tomorrow. There should be a tunnel leading to the top at the end of this forest …"
"Fine!" Zhang Tie nodded.
Since he entered the core area of Mountain Ruins, Zhang Tie had been fighting fiercely without any rest. Actually, it was not easy for him to stay in the water for over 10 hours. Although Zhang Tie could stand it, given that he might face more fierce battles later on, it was necessary for him to take a rest.
It should be dark outside Mountain Ruins.
Now that they had decided to find a place to settle down in this forest, the two people entered the forest and looked for a suitable place to settle down.
There was no soft soil on the ground of the forest. Perhaps there was soft soil before; however, it was hard now. The ground of the forest had been completely solidified and became extremely hard like being fired in a brick kiln or a magnetic kiln for a long time. Those soil slopes were actually as hard as iron. Even the irregular soil in the huge pits where the roots of those fallen trees were supposed to be soft was as hard as granite.
The terrifyingly high temperature was like a terrifying magic spell that had completely turned the forest into a barren land.
The fallen huge trees were like the city wall in front of Zhang Tie and Tang Mei and the collapsed skyscrapers and ruins after a terrifying earthquake. The two people could only grope in the gaps between the fallen huge trees, surmounting or bypassing obstacles one after another.
After walking for a short while, Zhang Tie found a huge tree hole higher than 1 m in the middle of a broken tree trunk. Additionally, the tree hole was blocked by the trunks and branches of other fallen or broken trees, forming a blind angle. Zhang Tie pointed at that place. Tang Mei nodded. Closely after that, the two people walked towards that tree hole.
Upon closer inspection, the inside of the tree hole was actually very wide. The entire tree hole twisted and extended for more than 20 meters into the trunk. The opening was considered small. Behind the opening, which was the inside of the tree hole, was a lightbulb shaped space, enough for two people to rest inside.
"Hah, it's a nice place. If we keep warm inside, the light will not penetrate through …" Zhang Tie drilled in first, closely followed by Tang Mei.
At this moment, Zhang Tie's precious golden secret item Heavens Separation Sword completely became a tool for chopping firewood.
The tree core inside the tree hole had not been completely carbonized. It was just as hard as gold and iron. Holding his Heavens-Separation Sword, Zhang Tie kept cutting out two places on both sides of the tree hole which were suitable for people to lie down and sit down. The firewood that had been cut out became firewood and crumbs.
After piling those firewoods together, Zhang Tie flicked his finger and had a spark fly into those firewoods. After a short while, a ball of fire had been lit in the tree hole. The bright flame drove away the darkness in the tree hole at once. As a result, the entire tree hole became warm at once, making people reassured.
As they gathered around the bonfire, the chill brought about by the ice-cold water slowly disappeared.
"Brother, don't you roast some potatoes?" Tang Mei asked Zhang Tie as she blinked her eyes.
After hearing Tang Mei's words, Zhang Tie became faintly stunned. Closely after that, he revealed a smile. Closely after that, he took out some potatoes from Castle of Black Iron and threw them into the bonfire.
With the rise of the bonfire, a mysterious aroma gradually appeared in this tree hole. The aroma was very special. Only after inhaling it slightly, Zhang Tie had felt clear-headed in a split second. At the same time, his guts felt comfortable while his spiritual energy and battle qi were greatly nourished …
"Ahh, what's that aroma?" Zhang Tie asked out of curiosity.
"This is one of the effects of heavenly sandalwood. Pitifully, these heavenly sandalwood trees have been dead for a long time. The effect of heavenly sandalwood trees is less than 1/10. If we cut off the wood from the living heavenly sandalwood trees and make incense by burning it, the aroma of heavenly sandalwood could even promote the cultivation base of immortal emperors. It's more beneficial for ordinary immortal generals and immortal weapons below immortal generals …" Tang Mei said in a pitiful tone.
When he realized that there were so many precious items in this forest, Zhang Tie finally understood why Tang Mei felt pitiful. This item was even more precious than element crystals.
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