The news was sent out with a special issue of the morning post. After people learned the news, they were speculating that the prime minister had something new to invent. People are curious and ready to go in the afternoon.

People waited for the morning to pass quickly. And Shang Wen gave the pressure cooker to Yingyu. At the same time, a note was attached: "With him, it only takes two hours to make soup." Shang Wen wrote.

"White-eyed wolf. Don't want to drink my soup in the future. Yingyu said fiercely.

"Drink soup. I'll let you drink the soup. Yingyu rewrote a note and sent it back along with the pressure cooker.

"I'll punish you for making me soup. Otherwise, I'll use it as a soup pot. Shang Wen couldn't help but smile when he saw this note.

"I don't know how to make soup." Shang Wen said.

Look at the pressure cooker. Shang Wen decided to advertise it for free and promote this pressure cooker.

In the afternoon. In the open space outside the South City Gate. People are already surrounded by water. And Shang Wen was busy making some strange preparations. The first is to check how the sealing material of the two copper balls is. Then there was a dozen horses.

King Qin also learned of this in the newspapers. It was very strange. So I also felt the excitement of the city gate tower early. The last time the phonograph appeared. It's because Shangwen didn't notice. This time, Shangwen was notified in advance. People speculate that this time there is no new invention to be made. At a time when the people are talking. Shang Wen finished checking.

"I'm glad you all came. This time, I'm going to do an experiment about atmospheric pressure. That is, to prove how much pressure there is in the air around us. Shang Wen said. As soon as these words came out, everyone was in an uproar.

"What, there's still pressure in the air around you?" One person asked.

"Is this possible? How much force can this air have. A man said nonchalantly.

Saying that, Shang Wen began to prepare, as he did yesterday. Seal. Fill with water and put together. The water inside the two balls is then emptied with a pump.

"It was filled with water at first. The water squeezes the air out. Then we take the water in the mouth. There's no air in it. Shang Wen finished speaking.

"Now, let's see, how much force there is in the atmosphere around us." Shang Wen waved his hand after speaking.

Two coachmen stepped forward and fastened the iron ball with ropes, and then pulled two horses in different directions.

"Just this bronze ball, and two horses are used. I can pull it away. A strong man said.

"Can you have two horses?" A man said disdainfully.

"Let's see. Neither horse could pull. The other man said eagerly.

"What?" Everyone was eager to see it.

"Two copper balls can't pull two horses apart." King Qin looked at it and said. In his impression, this one is very relaxed.

"Two more horses." Shang Wen ordered.

The two horses pulled up again.

"Smack." The whip was unusually loud. The horses are also very hard. But the two copper balls just can't be pulled apart.

"What's going on with the two copper balls? Is it twisted? "By this time, screws had already appeared. The idea came naturally. But those two copper balls are seen by everyone, and there are no screw mouths.

"Plus." Shang Wen waved his hand directly.

Two more horses were added.

People started talking.

"Six horses. It's time for this copper ball to open. "People are guessing.

The horses neighed incessantly. The whip was loud. But the two copper balls still had no intention of opening.

"Smack." The rope on one side of the copper ball was pulled apart.

"Change to a thicker rope." Shang Wen ordered.

"Sprinkle water on the rope." Shang Wen ordered. This is done to increase the toughness of the rope.

"Oh my God. The rope that was so thick was broken. These two iron balls are not even opened. People exclaimed.

"What kind of law did the prime minister cast, six horses can't pull it." Everybody talked about it.

"Do you think the iron horse will work?" Someone suggested.

"I'll see it." Someone said.

"Two more horses." Shang Wen said.

The two horses still haven't opened the two copper balls. Shang Wen was prepared. Back then, Ma Debao's ball was about the same as this ball, and people used more than a dozen horses. How many horses did I use for this? Far from it.

"Two horses on each side." Shang Wen said.

"Everybody's paying attention. If the ball is opened. It will make a loud noise. Please be prepared. Spread your mouth wide, or cover your ears. Shang Wen said.

And they did so.

Ten horses still haven't pulled away. Shang Wen was helpless. I had to add two more. At this moment, the interest of all onlookers was raised to a high point. There are already people in the middle who are obsessed with this ball.

"I bet. I can't pull it open this time. This ball, God. A man said.

Twelve horses, whipped by the groom, began to pull desperately in two different directions. Shang Wen in order to avoid the crowd being injured by the frightened horses. Order the soldiers to retreat the crowd a hundred paces. There are no people in either direction.

Twelve horses, pulling desperately. Everyone is watching with their eyes wide open. People cheer up the horses. They wanted to see how big this bronze ball was, and it could make twelve horses unable to pull away.

King Qin also looked nervously. Yingyu also looked nervously at the side of King Qin.

"The horses are getting tired. Add two more horses. Yingyu said.

King Qin was about to give the order to add two more horses.

"Bang." There was a loud bang. The two copper balls finally pulled apart. King Qin was taken aback unprepared. And so is Yingyu. All of them are. Only Shang Wen was not frightened. He knew that when the number of horses increased to a dozen, it should be about to go. Moreover, his ball is about the same size as Matbao's. Therefore, Shang Wen prepared in advance. And the horses, though frightened, had almost exhausted their strength and did not run away. Coupled with the groom's vigorous maintenance, he didn't run around.

And people patted their chests and said, "I'm scared to death." Scared to death. ”

Subsequently, some bold people stepped forward and began to look at the two copper hemispheres.

"Hey, that's normal." A young ** touched it boldly and said.

"That's, it's normal for the two copper hemispheres to merge in everything." Shangwen explained.

"Then why can't so many horses be opened?" Someone in the crowd asked.

"That's atmospheric pressure." Shangwen explained.

"The reason we say the air is light is because we live in it. We have air in our lungs, and the pressure of the air is the same so that we will not be squeezed together by the atmospheric pressure, but there is no air. Just like this copper ball. Shang Wen continued.

"Oh." Everyone said as if they understood.