"Alas, this is a big lesson, where do I start?" Zhang Changsheng scratched his head a little, and asked him to talk about the molting phenomenon of arthropods, and he also had to talk about the order of the evolution process of animals.

"Then my dad and my mom are fine, right?" Xiang Qingxi was most concerned about this.

"It's not a big deal, except for the molting phenomenon of arthropods, if from the perspective of life, it is degeneration, but for now, they are not degenerate, but humans have some functions of arthropods, this is the superposition of functions, it should be evolution. Zhang Changsheng checked Xiang's father again, and Xiang's mother said so.

"It's okay, when will this skin be finished?" Xiang's mother stopped doing it, women, they all love beauty, which makes her whole body like molting, which is really more uncomfortable than killing her.

"It should be soon, just wait. Zhang Changsheng said uncertainly.

"It's okay, the last thing we lack now is time, so let's talk about the molting phenomenon of arthropods, it's quite curious. "Liu Xuelin is still thinking about this matter.

"Arthropods are the largest phylum in the animal kingdom, and the scientific name is the phylum Arthropods, which includes the well-known shrimp, crabs, spiders, mosquitoes, flies, centipedes, and extinct trilobites. There are more than 1.2 million species in the world, accounting for about 80 percent of the total number of living animal species. Arthropods live in a wide range of environments, whether it is seawater, fresh water, soil, and air. Some species also parasitize in or outside other animals. Zhang Changsheng began the popular science knowledge link.

"Dizzy, old thing, what you said is too long-winded, can you make it simpler?" Liu Xuelin was interested in businessmen, and asked him to listen to these popular science knowledge, and promised that he would be angry for a while.

Zhang Changsheng glanced at Liu Xuelin, "It's you who wants to listen, and it's you who is long-winded, okay, let me put it simply, molting in animals is generally divided into three types, and most of the arthropods have three molting methods: growth molting, ecological molting, and metamorphosis. ”

"Well, old thing, it's much more clear to talk about it like this, you just have to say it like this. Liu Xuelin actually didn't listen much, and listened while drinking tea.

"Grandpa Zhang, is there any difference between these three kinds of molting?" Liu Shengnan was full of curiosity about the unknown.

"Some animals will no longer be able to meet their growth needs, so they must be stripped of their original shells and a new shell will grow under the original shell. This is the most common form of growth and molting. "When Zhang Changsheng was studying medicine, he had a lot of research on biology, so these things are like treasures.

"Ecological molting refers to the physiological and biochemical changes caused by sudden changes in environmental factors, such as the invasion of harmful substances, bacterial and viral infection, rapid temperature changes, etc., which eventually lead to molting. Metamorphosis molting is the molting of an animal from juvenile to sexual maturity, and it is a molt that changes its shape. ”

"Doctor Zhang, which kind of parents do my parents belong to?" Xiang Qingxi was a little confused when he heard it, this kind of academic thing is not easy for people to understand.

"What about your parents, I judge, it belongs to ecological molting, but their ecological molting is not because of the invasion of harmful substances, but the discharge of harmful substances in the body, I think, this black film, must contain toxins or germs, so envious. Zhang Changsheng gushed endlessly.

"So that's a good thing?" Xiang Qingxi listened and put his mind at ease.

"In terms of single molting, it's a good thing, but in terms of animal evolution, it's like degeneration. Zhang Changsheng thought for a moment, "But this kind of degradation is not necessarily a bad thing, if your parents still maintain the form of the human body, this is definitely a good thing." ”

"For example, if an arthropod has a severed limb, it will regenerate, do you think this is a good thing or a bad thing? If it degenerates to the origin of the animal, the function of a single-celled animal, maybe it is the so-called immortality. Zhang Changsheng raised his head and looked up at the ceiling of the hall at a forty-five degree angle, his deep gaze seemed to penetrate the ceiling, looking at the vast starry sky of the vast desert.

"Degenerate into single-celled animals, what level of arthropods are they?" Liu Shengnan asked a key question.

"Which layer, I'll do the math. The general evolutionary process of animals began with single-celled animals, passed through sponges, flattened animals, molluscs, annelids and finally arthropods. Arthropods are followed by echinoderms, vertebrates, and we humans are in the vertebrate series. ”

"Oh. All the people who listened seemed to understand or not, no one asked any more questions, and when they looked at Xiang's parents and Xiang's parents, they all began to "wow".

I saw Xiang's father and mother working for a while, the black membrane fell off, and the two of them became handsome guys and beauties, from middle-aged people in their forties and fifties to big girls and young men in their twenties, "Wow, Mom and Dad, you ...... You...... You're younger than I am. ”

"Really?" the two of them took to the bathroom in the back room to look in the mirror, and saw in the mirror how young they had become, and the two of them became excited.

"No, old man, young man, who are you? Xiang's mother asked proudly.

"Hey, beauty, why are you so beautiful?" Xiang's father also said with Xiang's mother.

"Okay, handsome guy and beauty, don't brag about each other, there's nothing uncomfortable about your body, right?" Xiang Qingxi walked over and asked.

"Haha, son, growing up so big, there is nothing more comfortable than now. Dad Xiang patted Xiang Qingxi on the shoulder, and then whispered, "You gave them this ginseng, right?"

Xiang Qingxi nodded, "How is it?"

Dad Xiang stretched out a thumbs up and said, "It's really good, don't take it out early." ”

"Uh, old ...... Dad, I didn't know it would have this function, if I knew, I would have given it to your second elder earlier, how about it? Are you two still satisfied with the effect of this medicine?" Xiang Qingxi teased.

"Satisfied, satisfied, I just don't know how long it can last, but it doesn't matter how long it takes, it's good to be young again. Xiang's mother hurriedly replied, but when she spoke, her eyes did not leave the mirror.

"Take a shower, I guess, the black membrane on your body has also fallen off, wash it quickly. Xiang Qingxi said and exited the bathroom.

In the living room, Zhang Changsheng was immersed in the efficacy of ginseng, while Liu Xuelin was thinking about how to develop its business, and the two of them discussed and discussed, and decided to take out a few ginseng slices to set up a laboratory to study the ingredients of this ginseng, on the one hand, for medicine, and on the other hand, for commercial development.

In the end, Liu Shengnan came up with an idea for the two of them, took out a slice and divided it into four parts for auction, and then used the proceeds from the auction to set up a laboratory, and used the results of laboratory research to use it for medicine or business.

Liu Shengnan's plan was unanimously agreed by everyone, and during the time when Xiang's parents were taking a bath, the auction plan had been finalized, and it was released in the name of Liu's Group, and two tablets of medicine that can be rejuvenated in human history were obtained, and the first one could be auctioned at a reserve price of 100 million yuan.