Even if it's really blocked, irrigation can't solve it. It doesn't matter. The system has predicted this problem for a long time. Therefore, the laying of the auxiliary pipeline is close to the ground. In order to facilitate the distinction, the upper part of the auxiliary pipeline will be transformed into a half meter wide green belt, which is not only beautiful, but also makes people clearly know that the auxiliary sewer pipe for daily use is under the green belt. Huang Yuan's face was tangled. "I understand what you said, but now what do we use to make the sewer? It's definitely not good to use wood. If you immerse it in water for a long time, the wood will rot... "Su Tang has discussed this with Cain. The hollow tree (random name) used to make steamed castor is very similar to bamboo, but it doesn't have a bamboo node like bamboo. Instead, it goes all the way to the bottom, and its thickness is very uniform. In this way, it will be a perfect drainage pipe, which may be a little brittle. At that time, let Cain solidify with his power, and it will be no problem. After hearing this, Huang Yuan immediately laughed, "OK, OK, this house needs to be dried for at least two days. I'll take them to cut more hollow trees these two days. I'll watch the water pipes myself and make sure they do well!" Su Tang nodded, "I'm sure I can rest assured that there's a Bo watching here. It's just that the wooden doors and windows you made before can't fall down! If you can't do it by yourself, you can order more. This camp canteen alone will use many sets! " Huang Yuan: "don't worry, it won't take too many people to cut down trees. I'll ask the rest of them to make wooden doors and windows, as well as all kinds of structural beams used to build the roof. They'll make them for you these two days. The canteen of the camp can be built after four days at the latest!" Hear this, Su sugar chest suddenly feel a burst of relaxed, nonstop dry for nearly half a month, finally to build it!? Cain's face was not happy. He nodded faintly, "the sacrificial divination shows that there will be a heavy rain after five days. We must hurry up!" Now there are still some people who sleep on the grass in the open air. It would be much easier to build the canteen in the camp before the heavy rain. Now, the first floor of the camp canteen has been almost covered, the load-bearing columns have been solidified, and the wooden beams supporting the second floor floor have been installed. In order to reduce the burden, we should lay two layers of wooden boards wrapped with mud at the bottom, and put specially thinned stone bricks on the surface, which is both solid and beautiful!