In the back yamen of Sishui County, a banquet was placed in the pavilion hidden among the flowers and trees. Several county officials were busy.

Zhang Dayou led Xu Ping to the pavilion, and sat down with guests and asked, "After the time, do you want to call a few song singers? However, the county town is full of vulgar makeup, which is better than nothing."

"That's all, it's better not to have it. It's better to sit here quietly and talk about your goodbye."

In this era, the songs sang very high in demand on the voice, and the words are straight and the lingering sounds are lingering, and the songs are sang well. The ones in Xu Ping's previous life are too much singing, and he can't even understand the lyrics after listening to one song, and he doesn't even have the qualifications to perform on the street. In addition, the people who are best at singing are both beautiful and pleasing to the eye. It is indeed difficult for a small county to have such talent. Just looking for a few women to make jokes, Xu Ping is not that leisurely.

Shortly after sitting down, a maid next to her came with sour plum soup. Zhang Dayou said, "When you first come, this soup should not be served. But you have worked hard along the way and want to be extremely thirsty, so take a sip to relieve the heat."

Yingke tea delivers guests soup, so the soup is sometimes called "Get Out Soup" among the people, which means that it is time to get out after drinking it. It is indeed inappropriate to come up as soon as you enter the door. However, it is immediately June. Xu Ping was sweating all the way, and it was right to drink a sip of sour plum soup to relieve the heat. This is just a custom, not a very strict rule.

I picked up the sour plum soup and took a bite, and felt the comfortable coolness until the bottom of my heart, almost every pore. With this mouthful, I felt that all the heat along the way was forced out.

Putting down the bowl, Xu Ping was about to praise him, but suddenly felt a sharp pain in his teeth. He secretly endured it, but how could he bear it? He couldn't help but cover his cheeks with his hands and frowned.

When Zhang Dayou saw this, he hurriedly asked, "What's wrong with the waiting period? But where is it uncomfortable?"

Xu Ping frowned and shook his head: "It's nothing. I have grown my teeth at the end recently. I think it's crooked and I don't dare to eat cold, sour and sweet things. I haven't had an attack these days, and I don't care about it. This sour plum soup is cold and sour, but I don't want to cause toothache again. Maybe, it will be better after a while."

Zhang Dayou looked anxious, but he didn't know what to do.

It is said that Xu Ping is not a human body traveling to this world. There is no reason why the teeth will still hurt when they grow. It should be that they will grow naturally. In Xu Ping's previous life, his wisdom teeth were not suffered for humans for decades. It was the product of incomplete evolution after food refinement. In this era, in the wealthy family, the wear of teeth was much worse than Xu Ping's previous life, and his oral space was large enough. Somehow, the teeth grew in a mess.

Wang Yan sat on the side, looking at Xu Ping frowned and felt very uncomfortable, and felt relieved. He could not drink it in small sips with sour plum soup. When Xu Ping arrived in Sishui County, he actually felt that he, the deputy envoy of the Ministry of Revenue, did not exist, and he didn't even look at him directly. He looked at him, and he would have suffered retribution.

After a while, the heart-wrenching feeling passed. Xu Ping put down his hand, breathed a sigh of relief, and said to Zhang Dayou: "My teeth are sour, sweet, cold and hot, I'm afraid I will forget it again after a while. You tell me, don't serve those dishes. We can just eat with our own people, just be simple."

Zhang Dayou responded and hurriedly called a man to come and tell him not to serve the dishes, and add a few unirritating new vegetables. Here, the intersection of the three rivers, add a few more river fresh dishes.

Wang Yan couldn't help but glared at him, and he didn't eat this or that. What else should I eat? It would be better to give Xu Ping a big bowl of white rice and eat it while eating it, so as not to delay others. However, he couldn't say this. Just as he saw Zhang Dayou's rushing order, Wang Yan was sulking.

Not long after, it was just dark, and the people in the yamen handed over the lights in the pavilion and lit a few more moxa velvets to smoke the mosquitoes.

A few fresh vegetables came up, and the girl came over and poured wine.

Zhang Dayou raised his glass and said, "Two deputy envoys, please drink one."

Xu Ping and Wang Yan picked up the wine glass and drank it, and slowly opened up the topic.

Xu Ping told Zhang Dayou: "This year, Heyin County has a severe drought. I wonder what you are here?"

"Return to the waiting system, there is less rain in Sishui County this year, but fortunately, most of the fields are close to the river and they have not suffered much disaster. However, in places with many river beaches, the disaster will be more severe due to the rolling north of the river."

"So that's it." Xu Ping nodded, "I wonder if the channel where the Sishui River enters the Yellow River is affected?"

Zhang Dayou said: "Fortunately, here is close to the remnants of Songshan Mountain, and there is water from the Sishui River and Luo River. The river channel does not roll north, so you can still take a boat. On the contrary, there are large beaches on the north bank, and many farmers open fields to grow yam on the beach."

Wen County is the place where the most yams are grown. Now it belongs to Mengzhou, and later it belongs to Huaizhou. It is the origin of Xu Ping’s famous local specialty “Huai Yam” in his previous life. There are large areas of Yellow River beaches, with deep and fertile mud and fertile, which is the ideal place for yam growth. After passing Sishui County, the Yellow River waterway often rolls north. Here, there are two descent flows in the south, and a large area of ​​river beaches are washed out on the north bank.

As he was talking, Zhang Dayou offered another round of wine. Seeing that Xu Ping was only concerned about talking to Zhang Dayou, Wang Yan ignored him at all, and couldn't help but feel angry and sat on the side and drank with his head down.

Putting down the wine glass, Xu Ping asked Zhang Dayou again: "Sanzhi should know that I am here to inspect the river channel that leads water from the Luo River to the Bian River. You are the landlord here, don't you know if you can teach me?"

Zhang Dayou looked at Wang Yan and saw that he lowered his head and looked calm, so he ignored him and said to Xu Ping: "The most difficult thing about the water that lures the Luo River is except at the foot of Guangwu Mountain in Heyin County is me. From here to Luo River, the mountain is not high and there are all earthen mountains, but there are many dry ditches. To dig a river from here, although some original ditches can be used, more of the ditches have been cut off from the canal. If you want to divert water, you must build a dam on the ditches, but building a dam blocks the water from the mountains during flood seasons. When you know, what the canal that artificial canals are most afraid of is that there are more and less water, which is the biggest difficulty."

Xu Ping nodded and sighed: "The theory of loss makes sense. It's okay if it's flat ground. What the most feared thing about the canal crosses the mountains is the explosion of mountain torrents. If there is no place to drain water, the canal will be useless at all."

When Wang Yan heard this, he couldn't help but sneer in his heart. It turned out that Xu Ping knew this truth, but he was a naughty man who didn't know the depth. The canal crossed the mountains, especially the mountains with countless trenches and beams. The water from the dam was not built, and the building of the dam blocked the passage of mountain torrents and washed down the canal's embankment as soon as the rainy season came.

Wang Yan said that the canal cannot be built, and he was not completely nonsense. At least he had roughly looked at the terrain from the water diversion mouth of Sishui County to Gong County. Just by listening to the place name in this area, you can tell how complicated the terrain is, such as Cherry Gully Walnut Gully, Liujia Gully Lijia Gully, Anlegou Maocao Gully, almost all of them were spinning between the ridges and ditches.

Building a canal in such a place is more difficult than digging from the middle of a stone mountain. When you dig through a ridge, you will encounter an extremely huge ditch. The downstream of the ditch must be blocked, otherwise the water you attract will flow along the ditch and into the Yellow River.

It’s okay to block the ditch, but it’s just a little more manual work. The soil from the digging ridge is just used to fill it. But the upstream of the ditch cannot be blocked as well. During the rainy season, the mountain torrents have nowhere to be excreted, and the water system in the entire area is completely messy, which is tantamount to a disaster for the place.

The newly dug canal must accept the mountain torrents from the upper reaches of the rainy season, which actually replaces the role of the Yellow River in the past. The problem is that the canal is a river dug manually, and the amount of water is limited. The more stable the water, the better. Once the mountain torrent is rushing, how can the canal run on a boat? Not to mention the flood control problem caused by this.

The canals dug by artificially can be easily over mountains. It is not just a problem of large engineering volume. The terrain of the mountain is prone to gather floods, which is extremely difficult to deal with. The Xianghan Cao Canal, which is a little south, has been proposed for more than a thousand years. During the reign of Emperor Taizong, he took action twice, wasting huge manpower and material resources. The final failure was not because of the huge project. It was just that the mountain torrent broke out during the rainy season, and any cofferdam collapsed as soon as it rushed.

The first thing to diversion from the Luo River is to avoid the gathering place of swamps in the Xingze area, because it is the place to accept the floods on the surrounding mountains. Another thing to solve is the problem of passing through the remnants of Songshan Mountain and Guangwu Mountain here.

After drinking another tour of wine, Xu Ping said to Zhang Dayou: "What I just said is indeed the biggest problem in digging canals now. I have already investigated Guangwu Mountain. Because of the severe drought this year, the Yellow River waterway went north and formed a beach nearly ten miles wide at the foot of the mountain. The river channel can walk from the beach. In addition, the Yellow River waterway can be built to force the Yellow River waterway away from Guangwu Mountain. Now it seems that the difficulty is not great, and there are not many soils and rocks excavated. Now only here is the water diversion outlet from Gongxian County. It is the most difficult part of this project. I wonder what can I teach you?"

Zhang Dayou looked at Wang Yan again, and saw him lowering his head and shining his eyes, he sighed in his heart. Although before Xu Ping came, Wang Yan secretly woke Zhang Dayou up and said that the two prime ministers in the court now do not support Xu Ping Kaihe, asking him to recognize the current affairs and not help Xu Ping to mislead himself. But no matter what, Xu Ping is his same year, how could he not help others in the same year? After all, it is much more reliable than others in the officialdom to support the same year.

Thinking of this, Zhang Dayou bowed to Xu Ping and said, "I'm too polite to do it. These are things that are part of the Xiaguan. Although the river channel is difficult to repair from the Luo River water diversion estuary, no matter what, it is only a few miles away, and you can dig it with your hands. As for mountain torrents, you can raise the river weir in the ditch that passes by a little higher, and force the floods during the rainy season into the Sishui River, and discharge them from the Sishui River to the Yellow River."
Chapter completed!