"Yes, Mom and Dad, you can try it now, I'm afraid that after a long time, the effect of the medicine will spread. Xiang Qingxi also said supportively on the side.

Xiang's father and Xiang's mother glanced at each other and nodded to each other, Xiang's mother said, "Dad, let's try it too, my son also said that they are rejuvenated, don't you want to know the effect?"

"Yes, of course, but we can't just try it in the courtyard, can we? "The hall design of the two-story villa in the Xiang family compound is much better than that of the three-story villa, and it is more spacious and atmospheric.

Uncle Quan didn't come in with him, and went to the three-story villa with the other servants to clean up.

In this way, Xiang's father and mother, Liu Xuelin, Zhang Changsheng, and Xiang Qingxi and Liu Shengnan were six people, after sitting down in the hall, Xiang Dad opened the jade box with some trembling, and there were four horizontal slices of ginseng in it, and each slice was divided into four parts, each of which was the size of a fingernail.

"How do I use this?" asked Dad Xiang after taking out a piece.

Zhang Yu took out a small saber from his pocket and walked over, "This medicine is very powerful, let's divide it into four parts, that one...... With one in my mouth, the process was a little painful, and the patience passed. ”

Dad Xiang didn't understand, and looked at Xiang Qingxi again, Xiang Qingxi smiled and nodded, "Listen to Doctor Zhang, it's okay." ”

Xiang's father and mother each picked up a piece, hesitated for a moment and put it in their mouths.

"Hmm!" Xiang's parents and Xiang's parents groaned comfortably at the same time, then looked at each other, and said together, "It's delicious, this feels so cool." ”

"Huh?" Zhang Changsheng and Liu Xuelin's eyes were about to pop out, when the two of them ate, the sour feeling, the feeling of not daring to open their mouths in pain, and the feeling of clenching their teeth, are vivid, as if it was just yesterday, how did it become delicious on these two people?

After a while, maybe I felt that I didn't feel anything, I pointed to the remaining ginseng tablets, and saw that Doctor Zhang and Xiang Qingxi didn't react, in fact, it wasn't that the two of them didn't react, they didn't understand what Xiang's father and Xiang's mother meant by referring to ginseng tablets, so the two of them divided the ginseng tablets into two parts and threw them into their mouths at the same time.

Zhang Changsheng just wanted to stop it, but Xiang Qingxi waved his hand, "It's okay, let them try." ”

Zhang Changsheng said with some worry, "Don't do anything, this is not a joke, it is better not to make up for it." ”

"It should be fine, let's take a look. Xiang Qingxi still didn't stop it, and continued to look at his parents there like eating jelly beans, thinking in his heart, maybe it was because his parents had drunk the spiritual liquid, so there was no painful reaction.

Just when everyone was surprised, Xiang's parents finally reacted, the originally gray hair soon turned into a black and shiny color, and the skin exposed on the face and arms began to molt like a black membrane, seeing this, Xiang's mother was a little scared, "Son, my hand...... How so?"

Xiang Qingxi walked over and looked at it, "Doctor Zhang, what's going on?"

Zhang Changsheng has been paying attention, when Xiang Qingxi walked over, he followed, as soon as Xiang Qingxi's words landed, Zhang Changsheng grabbed one hand of Xiang's father and Xiang's mother, and compared, "Oh, the molting phenomenon of arthropods, this is ...... How is this possible?"

"Doctor Zhang, the molting phenomenon of arthropods? What does this mean?" Xiang Qingxi didn't understand, in fact, Zhang Changsheng said this, not only Xiang Qingxi didn't understand, but even Liu Xuelin hadn't heard of it.

"Yes, old thing, don't say any creature terms, you speak some vernacular, adults know it. Liu Xuelin has become younger, and his temper has become anxious.

"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." ”