Sun Ce said to Sun He: "Let's go see the new boat, it has been stationed in Gepi for the past two days, there are mountains and rivers, and you can also go boating and fishing, which is not bad." You go to Pingyu and tell your father that I will go back two days late. Mr. Zigang, Fengxiao, do you want to go back to Pingyu first, or do you take your family over? ”

Guo Jia and Zhang Hong discussed it, and they both felt more comfortable resting near Gepi. Although Pingyu City is not small, it is a little nervous to station tens of thousands of troops, and it is inconvenient to run back and forth between the city and the military camp at that time.

Sun He agreed, took a few people, and hurried back to Pingyu.

Sun Ce turned around and rushed to Gepi. He didn't ride a horse again, but got into Huang Yueying's luxury car. Huang Yueying belongs to the kind of people who can enjoy and will enjoy, so she specially built a big car for herself and pulled it with two fat and strong Nanyang oxen. The car is very comfortably decorated, half for the bedroom, half for the studio, and the boundaries are clear.

Sun Ce sat cross-legged and greeted first. "Open the window, stuffy in the military boots every day, my feet stink very much, you take care of it."

Huang Yueying opened the window with a smile, and the cool autumn breeze blew in, and the strong foot odor was a little lighter, but it was still scented. Feng Wan smiled without saying a word, turned around and got out of the car. Xu Yue also smelled uncomfortable, but he was still not convinced, and he insisted that Sun Ce say a reason, and he didn't leave.

Sun Ce picked up a paperweight on the case, hovered in mid-air, and looked at Xu Yue. "Sir, how long does it take for this paperweight to hit the ground from the time I let go of my hand?"

Xu Yue was very unhappy. "Does this have anything to do with where the stone thrower lands?"

Sun Ce's attitude also became stiff. "What do you say?"

Xu Yue was stunned for a moment, a little short of breath. "The general means that this paperweight landing is similar to the landing of a stone in a catapult?"

"That's right, the role of the catapult is only to give the stone an initial velocity, and this initial velocity determines the flight path of the stone. If you don't take into account factors such as wind, if the force of the catapult is stable every time it is fired, the stones will fall in the same place, and this location is the most likely point that you have found, and your job is to find the relationship between this point and the initial velocity of the catapult. ”

Xu Yue nodded slightly, but he still didn't quite understand what Sun Ce meant.

"The force of the stone thrower determines the speed and direction of the stone as it flies out. Let's assume that if the velocity of the stone is so small that it is stationary when it leaves the stone thrower, does it fall straight to the ground as the paperweight? ”

"That's right, it's the simplest case." Xu Yue nodded again and again. "But...... This drop point is fixed and does not need to be calculated at all. ”

"Don't worry, if we give him a speed, a horizontal speed, will the landing point change?"

"Of course."

"What is the relationship between that landing point and this landing point?"

Xu Yue frowned and thought for a while. "Naturally, the faster the speed in the horizontal direction, the farther away it is."

"How far is it, is it only related to the speed in the horizontal direction?"

"Also...... It is also related to the height, the higher the position when leaving, the longer it will take to land, oh ......" Xu Yue seemed to understand something, and a person muttered something, and kept bending his fingers to do mental arithmetic. He used official dialect when he spoke normally, but when he spoke to himself, he spoke in dialect, and Sun Ce couldn't understand a word. But looking at his appearance, Sun Ce knew that this person was worthy of studying mathematics, and his brain was absolutely good, and he had already figured out the trick.

"Shall I continue, or will I give you a thought?"

"Don't make a noise, let me think about it." Xu Yue didn't raise his head and blurted out. As soon as the words came out, he realized that it was Sun Ce sitting opposite, which was a little embarrassing, but he quickly threw Sun Ce aside again, shook his head alone, and calculated with words. After a while, he picked up a piece of paper, took another piece of charcoal, and quickly wrote and scratched, and after a while, he filled a piece of paper, only as if Sun Ce and Huang Yueying did not exist.

At this time, Feng Wan walked over, holding a pair of snow-white footcoats and a pair of silk shoes in his hand, followed by a maid, who was holding a copper basin in her hand, and there was half a basin of water in the copper basin.

"General, wash your feet, put on new foot clothes, and be comfortable."

When she saw Feng Wan leave just now, Sun Ce didn't care too much, she just thought that she couldn't stand the smell of her feet, which was also a good thing, no one wanted to smell other people's stinky feet. But seeing Feng Wan go and return, with the water and utensils for washing his feet, he felt a little proud in his heart. Although Feng Wan didn't wash his feet personally, it was not bad to take the initiative to Zhang Luo.

"Thank you, thank you." Sun Ce said, reaching out to pick up the copper basin.

"Why do you need to do it yourself, let me come." Feng Wan put aside the footwear and silk shoes in his hand, took the copper basin from the maid's hand, put it at Sun Ce's feet, and reached out to untie Sun Ce's footwear. Sun Ce hurriedly stopped. "No, no, I'll do this myself, don't dirty your hands."

Feng Wan didn't insist, covering her mouth and laughing. Sun Ce naturally took off his clothes, soaked his feet in water, and washed them well. The water was actually hot, he was very surprised, Feng Wan smiled and said nothing. Sun Ce didn't say anything, after washing his feet, the originally clear water was already a little turbid. Feng Wan took a clean cloth towel and handed it to Sun Ce, picked up the copper basin herself, handed it to the maid, picked up Sun Ce's foot coat, and got out of the car with the maid.

Huang Yueying's eyes rolled around, but she didn't say anything, but her eyes were a little weird.

Xu Yue scratched his ears and cheeks while writing on the paper, and from time to time he picked up the paperweight and threw it out again and again. His hand grasping the charcoal grabbed it on his face, and after a while, he grabbed his face with black marks, and Huang Yueying couldn't help but want to laugh, revealing two shallow dimples on her cheeks.

Sun Ce looked at the two dimples, and his mood fluttered a little, as if he was drunk, and said to himself: "It's so good." ”

"Stumped Mr. Gonghe, are you so happy?" Huang Yueying completely forgot that this incident was originally provoked by her, and she became a fair person again.

"I mean, it's nice to see you." Sun Ce got up, stepped over Xu Yue, and squeezed to Huang Yueying's side. "Master Huang, I'm sleepy, borrow your boudoir and take a nap, can you?"

Huang Yueying's face flushed, and she looked at Xu Yue with a weak heart, and saw that Xu Yue was already immersed in calculations and didn't pay attention to them at all, so she whispered: "It's okay to borrow, don't flip around, otherwise you won't even be allowed to get on the car next time." As he spoke, he opened the door.

"Okay, okay." Sun Ce agreed, lowered his head and went in, and found that half of the side was covered with a pink quilt and a thin blanket, and there was incense, and the most outrageous thing was that there were actually two pillows. He turned around and asked Huang Yueying: "You are alone, how can you have two pillows?" ”

"You want to take care of it?!" Huang Yueying's face was red, and she pushed Sun Ce in and closed the door.