After returning to Yunhuang City, Chen Lei finally breathed a sigh of relief.
As long as he is in Yunhuang City, no one can kill him. However, what Chen Lei is going to do next is also quite troublesome.
Nowadays, most of the people in the entire Yunhuang Province have moved into Yunhuang City.
Only some miners would take the risk and go prospecting, mining, etc. under the protection of the guards of Yunhuang City.
Now, Chen Lei received news from the soul of the Martial Emperor of Cangmang Mountain that Cangmang Mountain will send a large number of masters to take revenge.
Cangmang Mountain’s revenge is not limited to Chen Lei alone, but to the destruction of the entire Yunhuang State. All the people living in Yunhuang State will be killed.
As a result, Chen Lei faced a difficult problem, which was how to deal with Cangmang Mountain's revenge.
After thinking about it, Chen Lei really couldn't think of a good solution. The current Yunhuang City was not strong enough to fight back against a sect like Cangmang Mountain.
"We can only withdraw all the personnel outside Yunhuang City."
In the end, Chen Lei decided to show weakness to the enemy and temporarily withdrew all the men in Yunhuang State into Yunhuang City.
At this time, Yunhuang City occupied nearly one-tenth of the area of the entire Yunhuang Province, which was enough to accommodate all the people who took refuge in Yunhuang City. Even if the population increased a hundred times, it would not be too much pressure on Yunhuang City today.
As for withdrawing the personnel outside, it was also very convenient. As soon as Chen Lei gave an order, the guards outside began to act. In a short period of time, all the personnel outside Yunhuang State would be withdrawn into Yunhuang City.
Finally, Chen Lei decided that in the future, he would set up a large formation across the entire Yunhuang State. In this way, no matter who it is, no one will be able to pose a threat to Yunhuang State in the future.
This time, when setting up the formation, Chen Lei did not ask for exquisiteness, but only for speed. In the shortest time possible, he wanted to spread the formation of the entire Yunhuang City to cover the entire territory of Yunhuang Province.
Of course, this is just Chen Lei’s idea now, and it is not so easy to implement it.
However, Yunhuang City is now full of talented people, and the direction map of the spiritual veins of the entire Yunhuang Province has already been detected and drawn out.
With this map of the spiritual veins of Yunhuang Province, Chen Lei's plan to set up a large formation covering the entire Yunhuang Province is no longer a castle in the air. Instead, he has a foundation for implementation. He only needs to carefully conceive a large formation and implement it step by step.
Chen Lei spent three days and three nights to roughly conceive a large formation. This large formation was still very crude and only constructed the skeleton of the entire formation. If he wanted to completely perfect it and cover every corner of Yunhuang Province, it would take a long time, even hundreds or thousands of years. This would be an extremely huge project.
Chen Lei was not in a hurry. He knew that setting up such a large formation would not be done overnight and it had to be done step by step.
After Chen Lei drew the formation diagram, he gave all the formation bases to the Xi clan to refine.
Today's Yunhuang City is extremely rich in resources, and any material you want can be found here. Therefore, the formation bases used for refining are all of high standards and strict requirements.