Thinking about this, Liu Yifeng suddenly recalled what happened last time when he took Da Hei and Da Bai to the pet store for a bath.
At that time, Da Hei had mounted a female dog right in front of everyone. He had no idea if the female dog was pregnant.
He had even exchanged contact information with the owner, saying that if she got pregnant, she should call him and he would take full responsibility for Da Hei.
However, it hadn't been that long, so it was impossible to know if she was pregnant.
After playing with Da Hei and Da Bai for a while, Liu Yifeng was about to go to Tong Tong's study to get the drone and start researching it.
His phone rang. It was a call from the truck driver from the freight company. He had signed a contract with them, and they used their trucks to help transport goods, charging based on the weight of the cargo.
The company would then assign the work to the drivers, taking a commission for themselves, and the rest was for the drivers.
Liu Yifeng didn't care how they divided it; he just paid according to the contract.
On the phone, the driver told him that they were taking the national highway and had reached the entrance of the village but didn't know the exact location, asking him to come and meet them.
A total of five trucks had arrived, and it would likely take the entire afternoon to load the goods. The remaining cargo would be transported the next morning.
After that, Liu Yifeng drove his own car to meet them. It only took about ten minutes to bring them to the orchard.
Liu Xincheng and the people he had hired were already waiting at the orchard.
These workers were hired by Liu Xincheng, so Liu Yifeng didn't have to pay them extra wages.
Soon, everyone got busy. With so much cargo, it was no small undertaking; they would be busy for a while.
Liu Yifeng gave the driver a pack of cigarettes and told them to wait in the truck and call him when it was full. He would then lead the way to the warehouse.
After giving instructions, he returned directly to Tong Tong's study and saw the drone placed on the ground.
He had expected it to be quite large, as Tong Tong had said it could carry a hundred pounds of liquid, and anything smaller would likely not have enough load-bearing capacity.
To his surprise, the drone's body was no more than fifty centimeters long, with wingspans of about forty centimeters.
The six propellers looked quite sharp. The white medicine tank was fixed in the middle. Once the liquid mixed with growth enhancers and nutrients was poured into it, it could start its work.
Liu Yifeng lifted the drone with both hands and walked towards the yard.
Although the drone didn't look large, it had a certain weight.
Its heaviest component was the engine; without it, it couldn't fly.
Liu Chunsheng saw this and quickly went to help. The father and son gently placed the engine on the ground. Liu Yifeng continued reading.
Looking at the large object, Liu Chunsheng exclaimed, "Did Tong Tong invent this? How did he do it? He can invent something like this; he can be an inventor!"
"It can't be said that Tong Tong invented it. This kind of thing already exists. Tong Tong could find out how to manufacture it with just a search. However, for him to understand it and manufacture it so successfully is already very impressive," Liu Yifeng said with admiration.
Even if Tong Tong taught him hand-in-hand, he probably wouldn't be able to build this.
"No wonder Tong Tong kept asking me to find small parts for him some time ago, and asked me to buy them from scrap metal dealers if he didn't have them.
At first, I thought he was just playing with them, but I never expected them to be for building a drone," Liu Chunsheng said, staring at the object in front of him without blinking. He was deeply impressed by Tong Tong.
"Dad, I'll put some water in the medicine tank first and try operating it in a bit!" Liu Yifeng said, then went to the kitchen, brought out half a bucket of water, and poured it directly into the medicine tank.
The medicine tank didn't look very large, but it was deep, so it should be able to hold a hundred pounds of water without any problem.
After filling it with water, Liu Yifeng ran back to the study and brought the remote control from the table.
Following Tong Tong's instructions, he first pressed the red button. The drone's propellers began to rotate slowly.
As the speed increased, Liu Yifeng gently pushed the control stick upwards.
The drone, which was on the ground, slowly lifted off, and in no time, it was flying higher than the trees.
Then, Liu Yifeng experimented with the controls. Pushing forward made it fly forward, pushing right made it turn right, pulling back changed its direction, and pushing left made it turn left. It was very easy to control.
However, Liu Yifeng didn't know how to spray the water, as Tong Tong hadn't taught him.
He looked at the remote in his hand and noticed a green button that hadn't been pressed. He guessed that this must be for spraying water.
So, he pressed it, and sure enough, water came out from the spray head, fine and dense.
Since the drone was directly above Liu Yifeng's head and not flying very high, the water directly sprayed onto his head.
Liu Yifeng couldn't dodge in time and got a large patch of his clothes wet. Even Liu Chunsheng got a little splashed.
But seeing how well this thing worked, they were overjoyed.
With it, they could save a lot of time and energy.
Otherwise, with seventy thousand pounds of fruit, it would have taken him who knows how long to spray it all by himself.
The water Liu Yifeng had just used was about ten pounds. He wanted to see how long it would take to spray ten pounds of water.
In less than two minutes, the water was gone.
The efficiency was extraordinary. If it were done manually, it would have taken several hours.
"This speed is really fast. It's already sprayed the medicine in such a short time.
So, a hundred pounds of water would be done in twenty minutes?" Liu Chunsheng was shocked by the speed.
These high-tech things were truly amazing!
Liu Yifeng remained silent. He slowly landed the drone on the ground and then turned it off.
He walked over and opened the medicine tank lid. It was indeed empty. Tong Tong was truly a genius, even building his own drone. Was there anything in this world he couldn't do?
"Dad, with this, things will be much easier for us. We won't have to do this strenuous work ourselves anymore."
"Indeed, Tong Tong is so smart. This child truly came to our home to repay us," Liu Chunsheng sighed with emotion.
Thinking that his father didn't know how to operate it and that he hadn't taught him earlier, Liu Yifeng refilled the medicine tank with half a bucket of water.
Then, he began to teach him hand-in-hand, "Dad, hold the remote, and I'll teach you how to operate it!"
Liu Chunsheng took the remote, and Liu Yifeng pointed to the red button, "Dad, press this first. It's the power button. Press it once to turn it on, and press it again to turn it off.
While operating it, be very careful not to touch this button, otherwise, if it stops working in mid-air, it will fall. If it hits someone, it will be dangerous."
Liu Chunsheng nodded nervously and then gently pressed the button. The propellers began to rotate.
Liu Yifeng's favorite aspect was that Tong Tong had done an excellent job with the soundproofing. No matter how fast the propellers spun or how high it flew, there was no noise at all.
If you didn't look up at it or get sprayed by the liquid, you wouldn't even know it was there.
Seeing that the propellers were spinning fast enough, Liu Yifeng pointed to the control stick again, "Dad, pushing this upwards makes it fly, and pushing it downwards makes it land. Push it gently, don't be too forceful."
After saying that, afraid his father might not be able to push it, he demonstrated. He pushed it upwards slightly, and the drone took off. Then, he gently pushed it downwards until it landed before letting go.
Seeing how easy it was to operate, Liu Chunsheng followed suit. Soon, the drone was flying. After reaching a certain height, Liu Yifeng taught his father how to control its direction.
When his father could operate the drone proficiently, the final step was to spray the liquid.
This was also very simple; just press the green button. To stop spraying, press it again.
Before long, Liu Chunsheng had sprayed all the water in the drone and then landed it safely.
"I never thought this thing would be so easy to control. I thought it would be difficult!" Liu Chunsheng said, looking at the remote control with great fondness.
After learning to operate it, he suddenly felt like he had become a distinguished person.
Before, he had only seen drones on the news, and he thought they were difficult to operate and that ordinary people couldn't learn them.
He never expected that one day he would be able to touch and operate such a device so smoothly.
Liu Yifeng smiled and explained, "Since Tong Tong intends for you to use this, he definitely wouldn't make it too complicated."
"That's true. But how does this thing fly? What makes it fly?" Liu Chunsheng asked curiously.
"It's like a car; it has an engine. But an engine alone isn't enough; it also needs a battery, a high-power battery.
Tong Tong said that two batteries can spray two thousand pounds of water, so when it's about time, we need to replace them.
Or, if you see the drone struggling to fly while using it, it's probably out of battery, and you need to land it quickly!" Liu Yifeng reminded him.
Liu Chunsheng nodded, "Okay, I'll remember!"
At this moment, Liu Chasheng walked over, carrying two boxes of nuts. Seeing the object on the ground, he asked curiously, "Yifeng, what is this thing?"