I have been farming since I crossed over.

The next day, Lu Jintang got up early and asked Lu Da to prepare the materials from last night.

When Yang Mingxi first brought up gunpowder last night, he only simply knew that it consisted of “one sulfur, two nitrates, and three charcoal”.

With the materials that Lu Da had temporarily collected, the two of them experimented several times before they came up with the most powerful formula: 12% sulfur, 12% charcoal, and 76% saltpeter.

Today I plan to go to the reservoir I discovered yesterday and conduct a real experiment to see if I can blow up the cliff.

After everything was ready, several people headed towards the cliff.

Yang Mingxi asked Lu Da and others to prepare gunpowder next to the cliff, then put it in a bamboo tube, bury the fuse, and then find several points to place the gunpowder.

In the first experiment, a gunpowder was placed at each point, and the fuse was very long. Several people quickly ran behind the hill and hid, and then Lu Dacai lit the fuse.

Yang Mingxi counted silently, and after about 5 minutes, the sound of gunpowder explosion was heard.

Another quarter of an hour later, a few people were ready to go to the cliff to take a look, and they saw that the lake water had flowed out from the cliff and spread along the wasteland.

"It looks like it worked. The power is really great, much stronger than the experiment last night." Lu Jintang said excitedly.

"That's for sure. The quantity last night was not enough, so today's is made according to the size of a normal explosive pack." Yang Mingxi said.

"Well, let's go over and take a look at the situation, and then consider the cost of digging the tunnel." Lu Jintang pulled Yang Mingxi, avoided the water flow, and walked towards the cliff.

Lu Jinshuo and Lu Changchun went to three other places to transfer people here, hoping to open up new land here together.

As a result, when the two men brought their people over, they found that the water had spread along the wasteland. They looked at each other and ran towards the cliff.

On the edge of the cliff, Lu Jintang and Yang Mingxi looked left and right, their faces full of smiles.

"This power is amazing." Lu Jintang said with a smile.

The total length of the cliff is about 5 meters. Yang Mingxi placed 5 explosive packs in an inverted trapezoidal shape on it. Now a big hole has indeed been blown open in the cliff.

Yang Mingxi had never seen a real gunpowder bag explode something in her previous life, so she didn't know whether this one was the best one and didn't express any opinion.

"Axi, how do we block it up here? We don't need so much water for the time being." Lu Jintang shook his head after reading it.

"Wow, Thirteen, you guys really dug up the cliff."

Lu Jinshuo saw Lu Jintang and his group from a distance, and from the flowing water, he knew that the cliff had been dug open.

When Lu Jintang heard the shouting, he turned around and saw Lu Jinshuo and Lu Changchun coming over with a group of people.

"Lu Da, pack up everything and deal with the scene."

Lu Jintang arranged for Lu Da to handle the scene, then turned to Lu Jinshuo and said, "Yes, come and take a look. I'm going to block this place off first."

"Why? Aren't we going to divert the river here?" Lu Jinshuo asked casually.

"Now that we haven't dug a river, the water can't flow down, otherwise it will be difficult to reclaim the land." After Lu Jintang said this, he looked at Lu Jinshuo with disdain.

"That's easy, just use bags filled with soil to block it." Lu Jinshuo said, then turned to the people behind him and said, "Come and help fill the bags with soil to block the water!"

"No, this is only a temporary solution. It can only be used temporarily." Yang Mingxi looked at the cliff and spoke slowly.

"Do you have any good ideas?" Lu Jintang also thought of using bags filled with soil to block it. Now after listening to what Yang Mingxi said, he knew there were other ways.

"Let's block it up first! Then build a trough with stones at the back, and then put an iron plate on it. When you need water, you can pull up the iron plate and the water will come out. When you don't need water, you can put the iron plate down to block the water." Yang Mingxi said as he gestured.

"Can the iron plate block the water?" Lu Jinshuo asked quickly.

"No problem at all." Yang Mingxi said without raising her head.

"The iron plate should be very big and heavy. Can it be pulled up?" Lu Changchun said.

"Please wait a moment. I'll make one for you out of mud and then answer your questions." Yang Mingxi said as she made the mud.

Soon, Yang Mingxi used mud to make a lake and a gate, then used wooden boards to make a door, poured some water into it, and continued:

"You see, it's like this. When you don't need water, the gate is closed. When you need water, the gate is raised and the water comes out."

Lu Jintang understood immediately and said with a smile, "Got it. I'll arrange for someone to come and take care of the rest!"

Yang Mingxi continued, "Regarding the problem Fifth Brother mentioned just now, we can put a wheel on the top of the gate and another wheel underneath. This way, we can easily pull up the iron gate."

"Is it the kind you use to trap wild boars? It saves a lot of effort?" Lu Jintang said excitedly.

“Yes, it’s actually the principle of leverage.”

"Okay, I'll arrange someone to do this." Lu Jintang continued.

"Then Thirteen, leave the task of digging the canals and the wasteland to me! I've already gone to find someone and will try to catch up with your progress," said Lu Changchun.

"Okay, fifth brother, now that things here are almost done, let's go back to Qianhuang Mountain first!" Seeing that everything was arranged, Lu Jintang hurried back to take care of the digging of the cave.

After saying hello, Yang Mingxi and Lu Jintang went straight to Kaoshan County.

In the afternoon, Yang Mingxi and his group arrived at Kaoshan County Commercial Street. Since they had been traveling all the way and hadn't eaten, they decided to grab a bite to eat there before heading to the underground cave.

Lu Jintang and his group went shopping directly on the commercial street.

The commercial street was bustling with people, strolling in groups of three or five, holding various snacks in their hands, chatting and eating heartily, it was very lively.

Several people walked from the beginning of the street to the end of the street, but did not see Lu Dashan.

Lu Jintang frowned and said, "Lu Da, go find your eldest brother and arrange some food for us."

Lu Da was so scared that he broke out in a cold sweat. Fortunately, it was his current master. If it was the previous one, his elder brother would be in trouble.

Lu Jintang took Yang Mingxi directly to the staff canteen, ready to rest while waiting for food.

When passing by the food preparation room, Lu Dashan's voice came from inside:

"Sister Zhang, that's heavy, leave it there and I'll carry it."

A female voice rang out, "Brother Lu, I don't need your help. I can do it myself. Go to the commercial street and take a look, in case anything goes wrong."

"It's okay, I just came from over there. I'll help you with the heavy work and then go over there." After Lu Dashan said that, he took the big basin from Mrs. Zhang's hand and moved the basin of things to the stove.