Castle of Black Iron

On October 21st of Black Iron Calendar, it was a sunny day; two airboats of Iron Dragon Sect finally arrived at Youzhou Province after flying across the entire Taixia Country...

The number of airplanes surged the moment they entered Youzhou Province. The two airboats then slowed down. Standing on the viewing platforms of the airboats, people could see swarms of airplanes.

In black, long robe, Zhang Tie was watching the picturesque mountainscape inside the airboat, hands on his back while numerous whims occurred to him.

The land under his foot already belonged to Zhang family of Jinwu Palace. As it was in Autumn, the over 600 miles' land was full of vigor. Being adorned with golden ears of rice, corns and red, hot pepper, the landscape looked pretty nice.

Many residents of Jinwu Palace were doing farming work in farmlands at this time. Nobody else knew the importance of this harvest and the difficulty of the current life.

Last year, there were relatively fewer fiery-oil agricultural machines in the farmlands of Youzhou Province; this year, wholly new fiery-oil agricultural machines could be seen everywhere in the vast land.

From the sky, people could easily distinguish fiery-oil agricultural machines from steam agricultural machines. As the latter burned diesel oil and kerosene oil, the moment they were started, they would emit black smoke from their chimneys which connected with their boilers. By contrast, the former only produce vapor and carbon dioxide, which were both colorless and environmental friendly.

Zhang Tie saw totally more than 100 fiery-oil reapers on the farmland whose horizontal length in total was over 600 m. Like a marching team, they pushed forward in the cornfield like tidy waves, shoulder and shoulder.

After these corn reapers passed by, all the corn stalks had fallen tidily. At the same time, packs of corn cobs were separated and entered the tractors behind the reapers, leaving rows of corn straws being engulfed by straws reapers.

After that, those corns would be transported to garages or food factories while those straws would be sent to the nearest fiery-oil production bases.

Trucks and tractors that carried corn straws queued up on the highway towards fiery-oil production bases. However, these vehicles left fiery-oil production bases with fertilizers, paper, fiery oil, even fuels like honeycomb stalk bricks towards the rest of the country.

Some fiery-oil production bases were directly linked to railways so that goods could be transported in a higher efficient way.

Like a spirit that Zhang Tie released from his box, fiery oil was more like powerful magic. Within a few years, when Zhang Tie gazed at the land below again, he had already been strange about so many fiery-oil machines.

Many things didn't need to be guided or concerned by Zhang Tie any more. The efficient division of labor and profit-chasing mechanism in human society would push numerous clans and mechanical engineers across the country to present their fiery-oil products as they had caught great business opportunities from fiery-oil.

The creative and innovative passion brought by fiery oil to the entire country could only be described by the term Big Boom!

When the battle flames between humans and demons at the bank of Weishui River and in the Helan Mountain were fierce, more and more eccentric inventions concerning fiery oil started to appear this year.

Although Zhang Tie was not very familiar with the situation in other places, last month, Zhang Tie had heard that someone was developing fiery-oil locomotive; someone even prepared to invent fiery-oil helicopters inspired by fiery-oil airplanes like those before the Catastrophe. The engineers of some fiery-oil arsenals under his rule were developing a variety of more powerful fiery-oil weapons. Jinwu Shipyard in Zhang Tie's old mansion was also developing new fiery-oil gas turbines with some shipbuilding enterprises and clans in Northeast Military Region.

Fiery oil brought him too many unexpected, fast changes.

"Money is the key for all the portals!"

When Zhang Tie was watching the landscape, O'Laura in black longuette slowly approached him from his back. When the strong wind around the viewing platform approached O'Laura, it passed by her from her sides. As a result, O'Laura's hair remained still.

Standing on his side, O'Laura and Zhang Tie watched the bumper scene together.

In less than 2 months, O'Laura had already entered a tower of time for two times. As a result, she was already a black iron knight in his 3 change realm.

Speaking of cultivation flair, without Castle of Black Iron, Zhang Tie couldn't match O'Laura at all. When Zhang Tie went to Ice and Snow Wilderness for the first time, O'Laura who was not much elder than him was already a powerful fighter. Even after becoming the queen of Sacred Iceland Kingdom, O'Laura still didn't abandon her cultivation. Therefore, with the help of All-spirts Liquid and Seven-Color Pills, O'Laura had already become a knight when she left the tower of time for the first time. Closely after that, she entered the tower of time for the second time.

Actually, 4 decades had passed for O'Laura although being less than 2 months actually.

Zhang Tie turned around and looked at her beautiful and proud face. After four decades' cultivation in the tower of time calmly, this woman had determined her mind to leave him; instead of being unwilling to leave him. Not until then did Zhang Tie really sense her hardcore. Perhaps, she had been born to be stubborn facing her environment. If not, this woman could not have survived her tiny tribe facing internal and external powerful threats.

At this moment, O'Laura seemingly had recovered her unyielding look, which was pretty beautiful.

Watching her, Zhang Tie felt complex as he didn't know whether he should smile or cry.

"Money is the key for all the portals!" Zhang Tie repeated her words as he nodded, "Although being succinct, it is actually a truth. If not, fiery oil could not have spread over the entire country virally in such a short period!"

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