Castle of Black Iron

After Bian Heng left, Zhang Tie stayed at the bottom of the ocean alone, waiting for the heat to dissipate.

As long as he didn't lose his mind, Zhang Tie didn't worry about it at all. Additionally, Bian Heng told him to wait in the water until the sunrise. Even though he was requested to stay in the water for 10 more hours, Zhang Tie could only do that.

When Zhang Tie recalled Bian Heng's warning, he looked at southwest Whitedragon Gulf. With lotus-flower eyes, Zhang Tie saw the thousands of meters high city wall of Emperor NvWa City once again.

The city wall was directly built above sea level. Beneath the city wall was the heavenly-level gate of the western city wall of Emperor NvWa City. Being more than 7 miles in width, the heavenly-level gate formed a huge arch. Like an aperture of a cross-ocean bridge, seawater was surging in the heavenly-level gate and just reached half of the gate. Inside the heavenly-level gate was Whitedragon Gulf; outside the heavenly-level gate was Yaohai Ocean. Besides, some earthly-level gates and human-level gates were also beneath sea level...

Enormous seawater, numerous fish, people and ships could access to those huge portals. Because of the city wall, the entire Whitedragon Gulf looked especially tranquil and peaceful...

Of course, Zhang Tie didn't want to travel outside the gate. He just wanted to move to a deeper place where it would feel a bit more comfortable due to lower temperature.

The temperature of seawater where Zhang Tie was in was about 18 degrees Celsius. According to Zhang Tie's experience, the deeper it was, the cooler the water would be. On average, the temperature of seawater would drop 1-2 degrees Celsius in each 1,000 m deeper. Concretely, it varied with the concentration of salt in water and the longitude and latitude of the waters.

Whitedragon Gulf covered over 600 miles. Within 60 miles, Zhang Tie found the deepest place was over 10,000 m in depth. Of course, the deepest place was 10 degrees Celsius cooler than the place where he was now.

'It would feel more confortable over there!'

Zhang Tie then swam towards the deepest place as fast as a torpedo. It only took him a few minutes to finish half of the distance. Gradually, he reached over 3,000 m deeper as the surrounding water became increasingly cooler. Of course, Zhang Tie felt more and more comfortable.

All of a sudden, Zhang Tie stopped in the water. As a light flashed across his eyes, he hit his head by his hand forcefully.

——Sigh! Sigh! Did you lose your mind? If you want a lower temperature, why do you have to go to the bottom of the ocean? Did you forget that you're a divine dominator? As you're in the water, isn't it easy for you to lower the temperature of the surrounding water?

'After all, Bian Heng has already left there; additionally, I'm thousands of meters in depth. Even if I use my ability of divine dominator, it would not be discovered here.'

After looking around, Zhang Tie saw a mountain at the bottom of the sea not far from him. The mountain was covered with many oceanic plants. Additionally, there were some secret caves on the mountain. Shoals of fish were swimming over there. Zhang Tie then headed for a mountain cave.

It was an area of colorful corals outside the mountain cave. A patch of long green seaweeds was swaying with seawater above the mountain cave and covered the entrance. The entrance was over 10 m high. The mountain cave was dozens of meters in depth. It was vigorous here. Fish were swimming around in the corals and the mountain cave, making it an aquatic museum.

Coincidentally, there was a smooth egg-sized boulder in the cave which was as large as a car. Zhang Tie came to the surface of the boulder before crossing his legs over there. At the same time, he ran his spiritual energy, cooling down the surrounding seawater in a split second as a piece of 30-cm thick ice surrounded Zhang Tie like a huge cocoon.

It felt pretty nice just like drinking a bowl of icy, sweet-sour plum infusion in the hot days.

Another whim occurred to Zhang Tie——if the solid ice could flow, it would definitely bring me a better effect of heat dissipation and feel better.

Zhang Tie then ran his spiritual energy again. Besides the ability to control water, Zhang Tie even used the ability to control wind. In an instant, the 30 cm thick ice around Zhang Tie broke into ice liquid as it started to flow around Zhang Tie. Zhang Tie felt more comfortable at a stroke.

After 2 minutes' comfortable experience, another whim occurred to him——the ice is zero degree Celsius; I wonder whether it would feel more comfortable at a lower temperature.

Zhang Tie then ran his spiritual energy instantly as the icy fluid surrounding him started to become cooler.

Minus 2 degrees Celsius, minus 4 degrees Celsius... minus 8 degrees Celsius, minus 10 degrees Celsius, minus 20 degrees Celsius... minus 40 degrees Celsius...minus 60 degrees Celsius...

When the icy liquid declined to a degree Celsius below minus 60 degrees Celsius, Zhang Tie suddenly felt that the scorching heat inside his body and the icy liquid around him reached a perfect equilibrium. He didn't feel cold or hot anymore; instead, he just felt bathing in warm water, being airy all over. Additionally, he felt extremely comfortable. As a result, Zhang Tie almost started to groan due to excitement.

When Zhang Tie tried to decline one more degree Celsius, the perfect equilibrium was broken in a split second as the airy feeling disappeared. When it returned back to the equilibrium, he got the airy feeling back.

Zhang Tie didn't know why. However, it should not be bad for him to feel good at this moment. Therefore, Zhang Tie continued to immerse himself in this icy fluid at such temperature so as to maintain that airy and comfortable feeling...

With such a marvelous feeling, Zhang Tie gradually forgot about himself and the surroundings as if he had fallen asleep...

...

All of a sudden, a cold feeling woke Zhang Tie up.

After waking up, Zhang Tie found that the heat in his body had started to dissipate. Therefore, he felt cold at a stroke.

After taking a look upward, Zhang Tie found that a red sun had just risen. He couldn't imagine that more than 10 hours had already passed, just like how he became absent-minded when attending the class of Miss Diana in the 7th National Middle School of Blackhot City.

Zhang Tie ran his spiritual energy. In an instant, the icy fluid around him disappeared...

When Zhang Tie felt his qi sea, he became thrilled in a split second——there was a tiny sparkle.

Of course, this sparkle was dwarfed by the former hot sun in his qi sea. However, it brought Zhang Tie a hope for the recovery of his qi sea.

'He deserves his honor!'

When Zhang Tie became thrilled, he heard his belly sing...

Touching his belly, Zhang Tie felt very hungry as if he had been starved for half a month.

Zhang Tie revealed a brilliant smile. Closely after that, he came out of the mountain cave and shot towards the bank as fast a lightning bolt...