Beichen was located at the extreme north, and the weather was extremely harsh. There were even places that were filled with ice and snow all year round, causing one to freeze to death the moment they arrived at winter, and it was unknown just how many people Beichen would freeze to death every year. This was especially true for the new children. None of the children born in winter died in winter.

This was Beichen's pain, and also the reason why Beichen and the others were fighting with their lives on the line, wanting to take over Sky Martial.

It would be fine if they won, but at least they could spend a few good years. If they lost, they wouldn't be able to live a good life for years.

Although the harvest wasn't much, at least he could have a bite to eat.

After knowing the use of these blackstone mountains, Xu Zicheng almost cried. He immediately sent a special message to the great general, Wang Liuyuan, asking him to immediately send troops to the blackstone mountains. No matter what, they would first take over the blackstone mountains before saying anything.

To them, Beichen, the Black Stone Mountain was just too important.

With these black stones, forget about the next few years, even if a dozen years passed by in the future, they, Beichen, would not be afraid of the cold winter.

Of course, other than the letters, Xu Zicheng also ordered his men to transport the black stones to Beichen.

He was clearly aware that the officials within the imperial court could only speak and did not make a move. If they were allowed to see the actual benefits, they would not only not make a move, but would instead stop them.

As for whether those people would take credit for it or not?

Xu Zicheng wasn't worried at all. Their family's generals were no pushovers, and no one in this world dared to rob their great general of his meritorious services.

As expected, not even five days after Xu Zicheng's letter was delivered, Liu Yuan's letter arrived. Liu Yuan said to Xu Zicheng in the letter, make it convenient for him to act, and protect the Black Stone Mountain at all costs. Liu Yuan will bear all the consequences by himself.

With Liu Yuan's letter, Xu Zicheng was even less worried. Not only did he get his soldiers to take action, he also got Beichen's soldiers to come over here and let them dig up the black stone and the black mud.

As for their disobedience?

This Xu Zicheng wasn't worried at all. His soldiers specialized in treating all kinds of complaints. If anyone disagreed, he would beat them until they submitted.

Ji Yunkai looked at Beichen's soldiers, who were busy picking up stones and digging out black mud.

She didn't understand Beichen that much, she really didn't know that Beichen was so lacking in things like lighting a fire. If she knew earlier, if she had known earlier …

If she knew earlier, she would have told Xu Zicheng sooner or later that these black stones could burn and the black mud could help burn. After all, Beichen and her men had worked hard on this trip, how could they not see anything?

It was just that she did not expect Beichen to place so much importance on these black rocks. She could not help but feel lucky that she did not tell them about the more flammable oil underneath, otherwise, it would be impossible for others to touch this place.

Now, Xu Zicheng truly saw Ji Yunkai as a god and offered him up. Who would have thought that the broken stones in the Black Stone Mountain, mixed with the black mud on the ground, would actually be able to burn him up. It wasn't like no one had picked it up and tried it out before, but no one had ever found one that could burn.

"It's pretty good." Ji Yunkai was still quite impressed with Xu Zicheng. After entering the "Treasure Mountain", she could still calmly consider her future. This person was indeed not simple.

"With lady's words, we can rest assured. Miss is our great benefactor to Beichen. Miss, you don't know, but for us Beichen, this discovery is like a blessing for us. " Xu Zicheng was not an emotional person, but when it came to Beichen's hardships, his eyes couldn't help but turn red.

"At this time, Beichen is in the midst of winter. With these black stones, even if no one can survive, at least a few less will die." At least his men would not freeze to death.

Xu Zicheng didn't say that, but everyone understood.

"General Xu is too polite." Seeing Xu Zicheng's excited face and how he treated her as his benefactor, Ji Yunkai couldn't laugh at all. His face twitched slightly as a response.

She, who was from the Revelation, and the wangfei of the Prince Yanbei that Beichen hated the most, had actually become Beichen's savior. This was simply a joke.

She really did not dare think about it. If the people of Revelation knew what she had done, would they sentence her to death?

From the perspective of the Revelation, if Beichen lost one person, the Revelation would become an extra threat. As a member of the Revelation, could it be considered a traitor for her to do this?

Was Xiao Jiu'an speaking the opposite?

Or was Xiao Jiu'an praising her and not stupid enough to leak the news about Black Oil?

She didn't know about Beichen's situation, so Xiao Jiu'an must have definitely known about it. Xiao Jiu'an did not remind her beforehand, that she could not blow the news about the black stone, must have done it on purpose, right?

What exactly does Xiao Jiu'an want?

After all, the purpose of the existence of the Yanbei Army was to resist the Southern Wilderness and Beichen. The Southern Wilderness was getting worse every year in the past few years, and Beichen's situation was not looking good either.

At this rate, it was very likely that Beichen and the two strong enemies of the Southern Wilderness wouldn't be a match for the Revelation. At that time, the Yanbei Army that existed specifically for Beichen and the Southern Wilderness would be useless.

If it were useless, the Emperor would still tolerate Xiao Jiu'an the way she is now. Would he not dare to kill Xiao Jiu'an?

The answer was definitely no.

If Xiao Jiu'an did not want to fight internally and overturn the emperor to sit on the throne, it was reasonable for him to raise bandits …

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