In the beautifully decorated room, Zhao Jie patiently and seriously instilled in Xiaoling what girls must know about precautions. During this time, he looked at Bai Xiao and showed a faint smile on his face.

At this time, Bai Xiao was still immersed in various bad experiences of a woman coming to her aunt. Thinking that she might come to her aunt in the future, she suddenly felt extremely painful and looked like she was in love with her.

"Auntie, what's going on with dysmenorrhea?"

Xiaoling blinked and asked curiously.

"... Regarding dysmenorrhea, here is something that girls need to pay attention to. The reason why some people have dysmenorrhea is that the endometrium of the baby's room secretes a large amount of prostaglandins. These prostaglandins will cause violent contraction of the smooth muscle of the baby's room, causing ischemia, hypoxia, and then causing pain."

"So you can take some non-steroidal anti-inflammatory drugs represented by ibuprofen and aspirin. These drugs do not contain hormones, but can reduce the secretion of endometrial glands from the source and relieve dysmenorrhea."

"Isn't it poisonous?" Xiaoling asked in confusion, "My mother told me that it's the medicine that is three parts poisonous."

Zhao Jie nodded: "Anti-inflammatory drugs can indeed cause some digestive discomfort, but this will only be reflected after long-term continuous use. Generally, one or two tablets are enough before aunts, and there are no side effects."

After a pause, Zhao Jie looked at Bai Xiao and continued: "But the painkiller that acts on the central nervous system is different. It is a powerful painkiller. It acts on the central center and makes people depend on it. Of course, this painkiller is not available casually in pharmacies."

Bai Xiao nodded and suddenly felt that it was quite funny now, but she also knew that even if she couldn't use the knowledge she was talking about in the future, it was still necessary to listen to it. What if... what if it was used?

I thought in my mind that if I had this kind of physique, wouldn’t it be a tragedy?

Thinking of this, Bai Xiao asked, "Mom, does dysmenorrhea account for a high proportion?"

"This depends on the person." Zhao Jie thought for a while, "Generally speaking, the probability of occurrence in the first year is more than three-quarters, and the second year will drop to only about one-tenth, and then it will decrease year by year. Unmarried and children-free women account for more than 90% of the entire group."

The probability of the first year exceeds 75%. Bai Xiao's face turned slightly pale after hearing the news.

Although her physical condition directly skipped the development stage and developed and matured in one step, strictly speaking, this year is her first year. I wonder if this bad luck will come to her. Thinking of this, she frowned slightly, looking like she was afraid before menstruation.

Seeing her reaction, Zhao Jie reached out and pressed her hand on Bai Xiao’s forehead and gently stroked her: “Don’t frown casually in the future. This is not good, and you will have headlines after a long time. Keep a good mood and don’t think too much. The skin care is also an important lesson you need to learn.”

Bai Xiao was stunned for a moment, then smiled softly.

After that, Zhao Jie carefully taught Bai Xiao many details that she didn't know or care much about before. Finally, after explaining, Zhao Jie looked at the time and it was almost nine o'clock, so he called Bai Zhendong down from the upper floor and asked him to send Xiaoling home.

Because of frequent visits, Xiaoling often spends the night with Bai Xiao. In addition, whether it is Zhao Jie or Bai Zhendong, she is almost treated as her future daughter-in-law to some extent, so she specially set up a temporary residence for her next door to Bai Xiao's room.

However, Xiaoling has been away from the capital for so many days this time. She has just returned from Binhe City and will still send her back tonight.

"Xiao Ling is gone." Bai Zhendong shouted softly, and Xiao Ling stood up and waved goodbye to Bai Xiao: "Miss, then I'll go back first."

"Well, go." Bai Xiao smiled and sent her to the door.

Xiaoling's home is also in the urban area, and it is not too far from Bai Xiao's home. After waving goodbye to Bai Xiao, Xiaoling got into Bai Zhendong's car and left Jinxiu Community.

After Bai Xiao sent Xiao Ling away, he was about to go upstairs to see the situation on Bai Zhi.

Speaking of which, the Bai family's house is really big. It has three floors in total and has an attic. It is located in the capital. Such a villa building is not enough to be lowered for less than 20 million yuan. Bai Xiao doesn't know how much money Bai Zhendong spent when he bought this building. I remember that the real estate market was not as crazy as it is now, but I still need to spend 10 million yuan.

Following the stairs paved with wooden floors, she soon arrived at the door of her sister Bai Zhi's room. When she pushed the door open, Bai Xiao saw Bai Zhi sitting in the beautiful and fashionable boudoir, straightening her back and burying her head in the pen.

Today I have a lot of homework. Bai Zhi has been working hard for almost an hour, but she has only completed almost half of it.

When she thought that she would have to do the next homework for another hour, it was almost ten o'clock and it was almost time to go to bed, she felt a little discouraged.

She couldn't interact with her "sister", and felt exhausted all over.

I really want to pinch my sister's little hand and see her beautiful white face.

Thinking of this, Bai Zhi became more and more vigorous, and her pen tip kept painting on the draft paper. After some calculations, she began to write the answers on the homework test paper.

Unfortunately, Bai Xiao, who had already reached her, glanced at her eyes and found that the problem-solving process of this question was wrong.

"Xiao Zhi, you got the wrong question." Bai Xiao couldn't help but correct it.

"Ah, sister, why are you here? There is no sound at all?" Bai Zhi turned around and saw Bai Xiao coming in. She quickly threw the pen on the table, reached out and pulled out a stool from the side, and asked her to sit down.

Bai Xiao sat skillfully on the stool, reached out to take out a 2b pencil from the pen holder, and clicked on the wrong topic. She said, "I wrote it wrong here."

When she was a boy, she often came to help her sister with homework.

"Wrong?" Bai Zhi was surprised. It was a physics question. A long wooden board was placed on a smooth ground and glided to the left at a certain speed. A metal block with an initial speed to the right was placed on the wooden board. There was friction between the two. Ask how long the wooden board should not slide out.

"Yes, it's wrong here."

Bai Xiao nodded, pulled out a piece of paper, and wrote next to it: "When you consider that small metal blocks slide on the wooden board, because there is friction between the metal blocks and the wooden board, the two must eventually slide on a smooth ground at constant speed. As long as you determine the direction of movement to the right is the positive direction, you can calculate their final speed and direction according to the law of conservation of momentum."

"And finally the metal block just slides to the other end of the wooden board. Combined with the law of conservation of energy, we can know that the energy lost by the entire system is equal to the heat generated by the friction between the metal block and the wooden board. According to the friction force, the specific length can be calculated."

Bai Zhi stretched her head and looked carefully, and suddenly realized, "So that's how it is."

She had actually thought of this idea, but she wrote the wrong formula when calculating it in detail.

After finishing the question, Bai Zhi blinked her eyes and said flatteringly: "Sister, you are so awesome, you will do it with just one look! Otherwise, you can do the remaining few questions for me, otherwise I will not be able to sleep tonight."

Bai Xiao glanced at her and said without comment: "Would you like to help you take the college entrance examination?"

"No, no, just these questions today, why don't you... you tutor me?"

Seeing that Bai Xiao could not help her with the exam, Bai Zhi settled for the second best, and instead asked Bai Xiao to help her with the tutoring.

The so-called tutoring is just to use other people's heads to do the questions. Of course, Bai Xiao also knew this truth, so he naturally could not let her do it, but she did not refuse. The little girl was still very smart. At worst, she could give her some advice on her thinking and let her write the specific process by herself.

"Then you move to the side."

"Hey, OK!"
Chapter completed!