Professor Andrew looked very happy, probably because the ranch was beautiful.

On the way, I told Han Xuan a lot of plant habits, such as planting mountain metrolite with other trees, which may cause the other to die; lily of the valley is beautiful now, but the fruits in autumn will be poisonous, etc.

The nearby half a kilometer is used as a living area, and alfalfa is not planted, and even if there are, it is not infected by fungi.

Andrew carefully asked Old Patton about the specific situation of downy mildew on the ranch. Han’s father suggested going to the place where he was seriously ill first, and after he agreed, he would go back to the garage alone to pick up the car.

"What a cute shorthair cat, what's its name?" Andrew bent down and touched Fat Ding's head, and said.

Fat Ding was surprised not to avoid it, but his face was really unhappy. When he stopped, he quickly hid next to Han Xuan, and his big tail rubbed against the boy's legs.

Han Xuan was wearing only a pair of shorts, which was a little itchy because it was a little itchy. After taking two steps to the right, Fat Ding followed him, as if he was trying to get him in a snail.

Unfortunately, the fat cat was holding it in his arms, and Han Xuan said: "Stimulate gglypuff."

"Looking at how it looks, it probably will be fifteen pounds?"

"You can't give it too much food in the future, especially snacks. If you continue like this, you may get diabetes, bones and kidneys."

After Professor Andrew finished speaking, he reached out to touch Fat Ding's belly.

After all, Fat Ding was slapped openly, his limbs and tail swayed together, protesting the guy who ruined the future of the cat and the guy who cut off the cat's food.

Do you want to touch Mr. Cat after doing something bad?

No way!

"Look, you see, it can't touch its ribs anymore. This is a sign of being too fat."

Fat Ding stopped hearing this, curled up his front paws in his chest, staring at Andrew with a blank expression, as if asking who could not touch the ribs...

Andrew saw it's natural and stupid. He laughed: "What a smart cat, it seems to understand my words?"

Han Xuan was afraid that the cat would really shake his head, so he quickly pinched the fat Ding and put it on the ground for it to play.

He spoke, "I will feed it less food. Fat Ding is just smarter. It can understand what people think."

"Yes. Animals are human friends."

Andrew pointed to the cattle and sheep in the distance, and sighed a little: "They are, too. In some cultures, before hunting and collecting animals, they must first obtain their permission and express their gratitude for their dedication."

"In order to meet their energy needs, humans naturally need to eat and nourish themselves. Plants are seasonal and contain energy not particularly comprehensive. Human ancestors chose their attention to animals."

Han Xuan didn't know why he said this, nodded and agreed. Andrew saw his question and explained: "I am a vegetarian. I have stopped eating meat since I was thirty-one. Although I don't oppose humans eating meat, I think I should be grateful for them."

It is rare for people who can really help but not eat meat. At least Han Xuan had never seen it in China in his previous life, and the only thing he knew was Natalie Portman, the girl he had met once in New York.

Now that he finally saw the living, Han Xuan's eyes were full of admiration. He knew that the old man was educating himself and nodded seriously: "I understand, so...will there be any changes if you don't eat meat?"

"There is no change. Now there are many trace elements that can be artificially synthesized." Andrew's expression was like crying and laughing, and he was helpless and tried hard to explain for a long time: "Sorry, do you understand trace elements? They are energy, something that allows people to live."

Han Xuan's mouth twitched. He said, "I am a first-year student at Brown University, Mr. Andrew."

"What?"

"Do you Chinese all come from Mars?!"

...

A few years ago, there was a Chinese in Australia. Mensa's IQ test result was 230. He studied mathematics at the age of two, entered middle school at the age of 8, and participated in the American Sat (American College Entrance Examination). His math test scored 800 points, and he got a high score of 760.

He finished college mathematics at the age of 9 and became the youngest international mathematics Olympic gold medalist at the age of thirteen. His name is terence-tao (Tao Zhexuan). He now lives in the United States.

This is what Han Xuan learned from Professor Andrew.

There is never a shortage of geniuses in the world, right, but Han Xuan means that he is the smartest person who is a little bit stupider than him.

I suddenly learned about this bad news today and couldn't come back to my senses for a long time. Thinking that Hawking's IQ is only 160, Einstein's IQ is only 200, and this guy is as high as 230!?

Sitting in the back row of Hummer Off-road vehicle, staring at the window and sighing.

Han’s father didn’t understand why he went home, but it took only more than ten minutes to see why his son became like this. He turned his doubts to Professor Andrew.

Andrew didn't expect that his words would be so lethal. He turned around and comforted him: "Don't be discouraged, you are already very smart, smarter than 99.999% of the people in the world."

"After killing, this is definitely a last killing!"

This sentence was instantly reflected in Han Xuan's mind.

I was just a little depressed. When I saw my father worried, I rubbed my face and smiled.

I was thinking in my heart that so what if I was smart, I was the most special one on this planet...

The car drove west for seven or eight minutes, and passed by the foot of the mountain where the black-nosed sheep was waiting for, and unexpectedly they were not seen.

Going further forward, I found a clump of alfalfa that had not been eaten by cattle and sheep. It was covered with gray and white, and the plants were shorter than other places. Some of the clover leaves were yellow and had already died.

There were traces of being eaten by insects on some leaves. Professor Andrew put on reading glasses, took the tablet and put it in the palm of his hand. After observing for two seconds, he said with certainty: "It's not just downy mildew, but the resistance of alfalfa has decreased. There are already aphids."

Han Xuan doesn’t care about downy mildew. As long as the forage can be safe, you can go to other ranches to buy it.

However, small things like aphids are troublesome. They can reproduce for dozens of generations a year, and their number increases in a geometrical multiple. If they are not killed, it will not take long for the entire pasture to have no intact plants.

Moreover, the vegetable base is still built nearby, which has caused a big trouble after being infected.

"Is there any way to cure them? I mean the safe one, our ranch has never used pesticides."

Han Xuan was about to speak, but his father asked him first, and he held back the words to his mouth.

"The situation is a little better than I thought. In fact, when the temperature drops in autumn, downy mildew will naturally die."

"If you are not at ease, you can sprinkle some organic fertilizer and dilute it with a small amount of Hilot Cream 600 times spray it, once a week, but in this way, you can't feed it to the livestock for a long time."

Professor Andrew held the leaves in his hand to the father and son: "As for aphids, it's even simpler. In the book "Plant Protection Products and Materials Allowed to Use for Organic Crop Plant Plants" published a few years ago, it is marked that sulfur is an organic mineral, just spray it with sulfur and water."

"I think there are aphids that only need to be killed immediately. They also feed the grass to livestock and remove the leaves with downy mold, otherwise they will have diarrhea."

Han Xuan suddenly felt that Professor Andrew became taller again, and blamed Martinez for his own inability to learn and ignorant.

As I thought about it, the scene of the moment I passed by the foot of the mountain suddenly appeared in my mind.

"You will get diarrhea after eating it. Those cute black-nosed sheep won't be..." (To be continued.)

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Chapter completed!