Lin Jiuxi thought: "Okay, this method is feasible, and I hope that things will go smoothly in the future. Then he wrote a letter to Yingfang's Prince Xinghe, saying that we now need Yingfang's help, let Yingfang help us with money, and then we can exchange your food, and you can also come to our place to do business, so that everyone can win together. Then he gave the letter to Linglong. He said to Linglong, it seems that this time we have to hand over these foods to the prince of Fangfang again, and we must remember to hand them over to Xinghe in person. The prince got the order from me, and if he holds this token, he can see the prince of Yingfang faster. Then he gave the token to Linglong and said to Linglong, you go and hand the letter to the prince of Yingfang, don't worry about anything else. Linglong said: "Okay, after saying that, she turned around and left."

After leaving, Lin Jiuxi had solved a big problem in his mind. He thought that if he established the Taoyuan Gang, his Taoyuan Class could be expanded, and Lanzhou could also be saved from the disaster. However, as for the floods, more manpower would be needed. Now, everyone could get what they wanted. Lin Long took the letter and the token, rode a fast horse, and arrived at the distance. It took a day and a night. Yingfang was a border town and they had been doing business for generations, so the border they had reached was far away.

Then Lin Jiuxi began to work on the flood relief. After all, it had been stopped before. The only problem now was to strengthen some of the protection issues of Lanzhou's border defense. Only by grasping the solution of these problems would there be no problem. Then Lin Jiuxi took these guards to observe the construction of Lanzhou's border defense. When Lin Jiuxi arrived, he saw that their progress was very rapid, and because of the key support of Nangong Jing, the progress was still very smooth, but there was another problem. The mud they used splashed to the same height, so naturally these outer walls would not work when they encountered floods again. I'm afraid they would have to find a special kind of mud. According to the biography of Nanzhao Kingdom, it was said that there was a kind of soil near Lanzhou that was particularly waterproof, but the local people did not like to use them to build houses, because this kind of soil had physical and mental characteristics, and the production process was complicated, so the people of Lanzhou City did not like to use this kind of soil to build their houses.

At this time, Lin Jiuxi suddenly thought of this kind of clay, and then said to the guards around him: "Go to the vicinity of Lanzhou to see if there is a kind of red and green soil. You can recognize this kind of soil at a glance, so if you find this kind of soil, report to me immediately. After the guards left, Lin Jiuxi looked at the ground again, looked at the place of Lanzhou, and thought that if it was only Lanzhou, fortunately, the flood could be blocked here. If there was no Lanzhou, then I am afraid that the other cities would suffer. Lanzhou is the most critical place."

Moreover, the situation in Lanzhou is relatively severe. Only if Lanzhou is defended can subsequent problems be easily resolved.

Moreover, the terrain of Lanzhou is relatively simple to build up in relation to other places. Therefore, Lanzhou is still a good place, which can not only protect other cities, but also help each other in their living conditions. However, one bad thing is that although the people in Lanzhou suffered a serious epidemic due to the flood, they relied on the water from the lake outside, so they were quite rich. However, when it rained, the sea water rose, and the residents of Lanzhou suffered.

Not long after, the guards came back one after another and said to Lin Jiuxi: "There is indeed such soil, but it is not very easy to dig. They are all near the mountain. It is far away from where the residents live. If we move here, it will probably take a day." Lin Jiuxi smiled and said: "Time is naturally not a problem. As long as we strengthen the outer walls, we will all benefit. Then Lin Jiuxi arranged for the beasts to start digging the soil.

If this kind of clay is really made into a solid, it takes a long time and it is not easy to solidify. Therefore, the reinforced city walls are coated with a thick layer on the outside, and the surrounding areas are also replaced with this red and green glazed soil. However, there is a special and strange thing about this soil. It takes half a day to dry around it, but ordinary soil will dry in a moment. So this is also the magical part of this lost place. Although it takes time to dry, this soil is very strong and stronger than ordinary bricks.

At this time, Lin Jiuxi was very satisfied with the results of the experiment, and then said to the guards: "Give the soil brought here today to the workers and let them use it. Then let them use this soil, and then let them use this soil after reinforcement, but apply a layer to make it more solid, because we don’t know when the flood will rise again, so you must strengthen the defense, and the residents in the city, their houses should also use this kind of soil, even if they encounter floods, the impact on their houses will not be very big."