Under the night, the empty mountain was hazy, and suddenly I heard birds chirping in the forest. Xu Ruo wandered above the reservoir and then walked to the long embankment. Standing under the weeping willow, looking up at the stars in the night sky, he said to himself: "Okay, it seems it's getting late, and I should go back." Walking down the long embankment, standing under the heavy gate, Then he slowly left. It took ten steps and looked back. It seemed that it was difficult to leave because the problem of opening the gate had not been solved yet. This problem had been lingering in its mind. How could it leave like this?
He lowered his head in thought as he walked, and walked to his shed without realizing it, and stood in front of the shed. They must have gone to bed by this time. They had worked hard all day during the day and were already very tired. He walked to the door of his room again, opened it gently, walked in, brought an oil lamp, lit the wick with a flint, and placed it next to the tables. He sat in front of several cases and began to meditate. After a long time, he opened his eyes. It seemed that he had already thought of a solution to the problem. I found brocade and silk, spread it on several desks, and started painting. I carefully figured it out and compared it carefully. If I found any errors, I invalidated them and threw them away. Throw it all over the floor. It looked at the waste paintings thrown on the ground, then got down and picked them up one by one, spreading them on the ground. It squatted in front of several cases and compared them one by one, found out its own misunderstanding, patted its thigh, and said: "Hey, why didn't I think of that?" It seemed that it had found its mistake. He got up again and paced back and forth in the room. I found some silk, sat down and started painting again, and started painting again. By the time I finished painting everything, it was already getting dark.
It was extremely happy and couldn't wait to rush to Yeling Mansion. When it walked out, it saw that it was still dark. It could no longer wait for dawn and immediately rushed to Yeling Mansion to tell the story of the plan it had come up with that night.
Standing outside the gate of Yeling Mansion, he stepped forward to knock on the door. The door bug opened the door and poked his head out. Seeing that it was still dark, he asked: "Sir, why do you come to see my master at this time?" Xu Ruo said anxiously: "I have something urgent to meet with Ye Ling Da Chong." Chong said: "Sir, my master has been busy with political affairs all night. He has just gone to bed now. Sir, you should wait until noon to come back." Xu Ruo said anxiously: "This matter cannot be delayed, cannot be delayed." Seeing that Xu Ruo was very anxious The only way is to invite it to the living room to rest, and then enter the mansion to report. Xu Ruo was restless in the hall, occasionally looking towards the backyard. At this time, Ye Ling walked out of the backyard and said, "Sir, you must have something urgent to come to see me at this time." Ye Ling walked up to the road and said, "Sir, please have a seat." Xu Ruo walked up He took out the silk from his arms and said, "The plan to open the gate has been made." Ye Ling took the silk, sat in front of several tables, opened the silk, and looked at the patterns on it. It is difficult for non-experts to understand. Xu Ruo stood behind Ye Ling, looked at the pattern and pointed at it, saying: "I drew two gears below and above the gate, and the two gears meshed with each other. There are four hand gates on the water tower. , the handbrake drives the gear up and down, and pulls the gate up and down to open." After listening to its explanation, Ye Ling said: "Sir's plan is very good and can be implemented." He looked at Xu Ruo again and said: "Sir, we have been fighting hard for five days and five nights, and we haven't rested yet. Sir, go back and rest first. It won't be a big deal if you are a day late." Xu Ruo said, "The matter is so important, how can we sleep peacefully." Seeing Ye Linglian again After yawning a few times, it seemed that it couldn't bear it any longer, so Xu Ruo withdrew and rushed to the reservoir.
Ye Ling also took a nap and called some river officials to ask: "Has the silt in the river bed been dredged?" The river officials replied: "Back to Da Chong, the river has been dredged. It just needs to be diverted into the reservoir." Ye Ling He was very satisfied and said: "Very good." Then he asked: "Has the canal to the Yellow River been dug?" The river officials replied: "Back to Da Chong, the canal has been dug." Ye Ling stood up and said: " Okay, come with me to the river channel for inspection."
Together they rushed to the river channel to inspect and walked up the river channel. They were watching as they walked to see if there was anything they had overlooked. When I walked to the reservoir, I saw Xu Ruo squatting in the reservoir and drawing a ruler. Ye Ling stood on the embankment and said, "Sir, what are you doing?" Xu Ruo stood up and said, "Big insect, the common people are carving the water level." The water level is a large stone pillar. Xu Ruo erected the stone pillar next to the water tower, engraved the scale and marked it with numbers. Then he walked onto the long embankment, wrapped the rope around his waist, slowly put Xu Ruo down, and stood under the gate. Xu Ruowang called up: "Big Chong, come down here for a moment." Ye Ling then detoured down, stood behind him and looked up. Xu Ruo said: "Big insect, let's install the gear in this position." Then he pointed upward and said: "There is also that position. The operation of the upper and lower gears can drive the gate to open up and down and release water into the canal." Ye Ling nodded repeatedly and said: "Sir, your idea is very good." Xu Ruo turned to Ye Ling, who was standing behind him, and said, "Big Chong, we need a lot of iron tools and blacksmiths to forge these huge gears." Then he walked up the causeway and pulled the He walked down carefully with Ye Ling's hand and marked the position where the gear should be placed. Ye Ling shouted from above: "Sir, be careful!" Xu Ruo looked up and said, "I understand." Ye Ling stood above and waited for a long time, and Xu Ruo from below shouted to him: "Big insect, you can pull me up. It's over." Ye Ling pulled Xu Ruo up.
They knew that Qi was rich in iron, so they transported a large amount of iron stones to Qi to smelt pig iron. He also hired a blacksmith to forge it, put the iron into the furnace, turned it into molten iron under high temperature, and poured it into the mold. After cooling and polishing, a huge gear is completed. The four huge gears were carried onto a cart by several big men and transported to the reservoir.
At that time, Xu Ruo invented the crane, which was the most primitive crane. Later, it was indispensable for the First Emperor to build palaces or the Great Wall. There is a pulley on the high end of the boom. Several strong men pulled the falling rope, pulled up the huge gear with force, and slowly lowered it. There were also several strong men below who placed and fixed the suspended gear. Two pairs of gears, upper and lower respectively, drive the gate. Xu Ruo stood aside and looked at Ye Ling and said, "Big Chong, you can enter the water tower." Ye Ling and the local officials entered the water tower together, removed the gate handle, and saw that the gate slowly rose. This time they succeeded. Xu Ruo stood behind them and said: "Big insect, we can divert the water into the reservoir." Ye Ling turned around and called a river official in and said: "Instruct the river official upstream to release the water." The river official withdrew and ran upstream to wave his flag and call Said: "Let the water go." The river official upstream opened the sluice gate and saw the river water rushing down, with momentum like a rainbow, rushing into the reservoir. Xu Ruo squatted in front of the water level mark to observe the rising water level. When water accumulates in a reservoir, the more water accumulates, the greater the impact will be, which can be identified by looking at the water level mark. Xu Ruo stood up and said, "It's time to open the gate and release the water." The two river officials moved down the two valves at the same time, and the water and sand were diverted. When they rushed out of the gate, they were like thousands of horses galloping, with mist rising and splashes flying. The washed out silt and sand are placed in baskets, which are pulled up with the help of a crane, filled with soil around the reservoir, and planted with some pine and cypress plants. At that time, they knew about environmental protection, and the concept of environmental protection was also the earliest thought put forward by the Mohists. Ye Ling looked at Xu Ruo and said excitedly: "Sir, we succeeded." The people and officials surrounding Ye Ling cheered and shouted, "We succeeded, we succeeded." Xu Ruo, who was standing aside, quietly left. Ye Ling walked out and watched its leaving figure. In order to build this huge reservoir, Xu Ruo worked hard on the construction site for five days and five nights. He never had a good night's sleep. Now he can finally have a peaceful sleep.
Xu Ruo walked towards Old Man Li's thatched house and opened the firewood door. Old man Li stepped forward and said, "Sir, you are back." Xu Ruo held his tired body and said, "Old man, I am a little tired." Old man Li looked at Xu Ruo and said, "Sir, I have cooked a pot Xiaomi porridge, please eat a bowl before going to bed." After Xu Ruo sat down, he said: "I am indeed a little hungry, old man, please serve a bowl first." Old man Li nodded quickly and said: "Okay, I'll go there right away. I'll serve you a bowl." Old Man Li walked into the kitchen with a smile on his face and served him a bowl of millet porridge. Xu Ruo first took a sip of millet porridge, looked at Old Man Li and said, "Old man, this millet porridge is so delicious!" Then he finished the bowl of millet porridge. Old man Li said: "Sir, it tastes good. I'll go and serve him another bowl." Xu Ruo said: "Okay, I'm sorry, old man." Xu Ruo drank two bowls of millet porridge in a row. Xu Ruo sat beside the couch, seemingly deep in thought. Old man Li walked in and said, "Sir, you haven't slept for several days and nights. You wouldn't be able to bear it if you put it on Chang Chong. Don't think about anything. Sir, you need a good night's sleep." Xu Ruo He just said: "Okay." Old Man Li withdrew, Xu Ruo fell down and fell asleep, and quickly fell asleep.
Ye Ling took a group of local officials and ordinary people to Uncle Li's house. When Old Man Li heard the voice calling him, he knew it was Ye Ling. Go forward and open the firewood door. Seeing Ye Ling and local officials standing at Chaimen Gate, with many people behind him, he immediately knelt down and said, "Big Chong." Ye Ling walked up and helped Old Man Li up and said, "Old man, you don't have to pay such a big courtesy. Please get up." Then. He asked, "Sir, are you at home?" Old Uncle Li said, "Sir, he just went to bed. He is too tired." Ye Ling said, "Yes!" Then he faced the officials and common people standing behind him and said, " Dear fellows, fellow villagers, your husband has been fighting fiercely for the people of Ye for several days and nights without sleeping. We will not disturb your rest now. Let him have a good sleep first and come back to visit another day. You all go back. ." After listening to Ye Ling's words, these local officials and people dispersed together. Ye Ling looked at Old Uncle Li and said, "Uncle, we are leaving now." Old Uncle Li followed and said, "Let the common people take care of the big bugs." Ye Ling turned around and said, "Uncle, please stay." Then he left.
Xu Ruo hadn't slept for several days. Once he slept, he slept all day and night. During this day and night, he slept very deeply, very deeply. The next morning, Xu Rui woke up early. Old man Li stood up and said, "Sir, you got up so early today." Xu Ruo stood in front of old man Li and said, "I feel really bad for disturbing old man for so long. Xu said goodbye to old man." Old man Li said. Said: "Sir, I'm leaving now." Xu Ruo said: "Xu has finished the things here. There is nothing for Xu here anymore. It's time to leave." Old man Li looked at the man standing in front of him. Xu Ruo, his eyes filled with deep emotions, said: "Sir, we common people are reluctant to let you go." Xu Ruo said: "There is no banquet in the world that lasts forever. When there are no more wars in the future, Xu Ruo I will come back to visit the old man." Old man Li said: "Sir, I am waiting for you to come back in Yedi. The mountain road is rugged and difficult, so please go slowly, sir." Xu Ruo said: "Okay, old man, you have to take good care of yourself. "Ok, I will," said Old Man Li. Then he picked up the package, put it on his shoulders, and walked out. Old Uncle Li ran out and waved: "Sir, please take good care of yourself. We will wait for you in Yedi when Mr. Li comes back." Xu Ruo looked at Old Uncle Li who was standing outside Chaimen and said, "Xu Ruo understands, old man." , it’s windy outside, go back.”
