Xia Youyou washed her face slowly. Unaccustomed to the toothbrushes of this era, she took out her own teeth whitening device from the space and put it in her mouth. She sat down at the desk and handed him a comb.

Cao An stood behind her, slowly trying to comb her hair. Her hair, perhaps from long-term malnutrition, was thin and dry, making it difficult to comb. Despite being careful, he still managed to hurt her. "You should do it yourself." After hearing her hiss in pain several times, he gave up. He abandoned the idea of ​​combing his sister's hair.

She took the comb with a smile and motioned him to watch how she combed it. It was inconvenient for her to talk with something in her mouth, so she just taught him slowly.

Cao An saw her grabbing the ends of her hair and gently scraping the knots with the teeth of a comb, and he understood. He took the comb back and combed it for her again. After all, he had thought of something, so he let it go with satisfaction. He didn't bother her anymore, put his hands behind his back, left the room, and went to the kitchen to serve the dishes.

Xia Youyou quickly spit out the teeth whitening device in her mouth and cleaned it.

After breakfast, they went out together, and Cao An took her to school on his bicycle.

"This school is my previous school. When you see the principal, be good and do well in your exams, okay?"

Xia Youyou swayed in the back seat, grabbed his belt and nodded, then remembered that he couldn't see, "I know!"

After riding the bike for more than ten minutes, they finally arrived at a school with a rather shabby gate. Cao An parked the bike in the shed, locked it, and took Xia Youyou to the office building.

Arriving in front of an office, Xia Youyou glanced at the words "Principal's Office" on the door. It was a simple wooden sign with slightly sloppy handwriting.

Cao An knocked on the door, and an old voice came from inside. "Come in."

He pushed open the door, and Xia Youyou followed him in. They saw an old man with white hair sitting at the desk in front of the window. He had his head down, writing something. When he heard them come in, he looked up. His wise eyes behind his glasses instantly fixed on Cao An.

"Here you are. Resting today?"

"Principal Luo. I've taken a leave of absence today to bring my sister to take the exam." Cao An moved aside, revealing Xia Youyou. "Youyou, this is Principal Luo."

Upon hearing this, the old man looked at Xia Youyou, who was dressed in black behind him.

"Hello, Principal Luo."

"Okay, good. Come, sit down." Principal Luo took out the prepared test paper and asked her to sit at the table opposite. "Sit down and see if there are any questions you can answer. Leave the ones you don't know blank. I'll test your level."

Xia Youyou sat down obediently, picked up her pen and started answering the questions.

Principal Luo stood up and left the office with Cao An, leaving her alone to think quietly.

"You called me yesterday and I didn't believe it. When did you get a younger sister?" He remembered that when he was studying here, he had only a widowed mother at home.

"She's the child of a distant cousin of my mother's. Our family couldn't afford to raise her, so she came to live with us. My mother also wanted a daughter, so she adopted her."

"I see. She's quite pitiful." He also noticed the girl's excessively thin frame. Yesterday, Cao An said she was 16 years old, yet the height of a junior high school student. "Let me first check her level. Even though you're teaching her, I need to see if she's in the first or second year of high school." Without the Gaokao, the second year of high school was the highest level of education. Cao An said yesterday that she was in elementary school, and he taught her the rest of the subject at home, but he didn't know how she was doing.

Cao An still has confidence in Xia Youyou, but it's too early to say anything.

"How are you feeling lately? Are your students traveling again?"

"Well, let them be. Young people are just hot-blooded and hot-headed."

"You'll be fine in two years. Take care of yourself." He really wanted to tell the old principal who had always been steadfast that the college entrance examination would be resumed next year, but he couldn't say it because he had to protect Xia Youyou.

Principal Luo patted his shoulder and said, "I'm already old and I don't know if I can hold on until then."

"Yes, it will definitely work. The country needs talented people and will recover soon. The dawn is just ahead, don't give up!"

Principal Luo, hearing him say this, assumed he had heard some news from above, so he didn't dare to ask any more questions, but he listened. "Then I'll hold on for another two years!"

Cao An was finally relieved, and the two of them walked in the corridor, looking towards the teaching building. The dilapidated teaching building, which should have been filled with the sound of students, was now excessively quiet.

Xia Youyou toiled away, her head buried in the exam, the questions likely handwritten by the principal. She carefully examined the questions, trying to make her handwriting look childish. After all, she was a poor girl with little education.

She kept time and finished most of the questions on the test paper. It wasn't that she couldn't do it, but she couldn't show it too obviously, which was inconsistent with her status.

I picked up the test paper and walked out of the office, where I saw Cao An and Principal Luo staring into the distance in a daze. When they heard the door open, they both turned around and looked over.

"Principal Luo, I'm done."

Principal Luo took it and glanced at it. "Very good, there are only a few of the most difficult questions left. It shows that you have a good learning ability. I heard from Cao An that he just taught you casually. To be able to do this well, it seems that you have a good talent."

Xia Youyou felt a little guilty. If she hadn't come from the future, she might have really failed. "Thank you, Principal Luo, for the compliment. I still have some things to learn."

Principal Luo laughed out loud, "This girl is quite modest." He put away the test paper and said, "Okay, I'll put your name on the list. Go back and let your brother teach you. It's better not to come to this school." You won't learn anything here. Students should study in school, not run around every day under the pretext of traveling.

Cao An took Xia Youyou to say goodbye to Principal Luo, took the bicycle and went to the scrap yard.

When passing by the black market where she went with her mother last night, Xia Youyou remembered the pair of eyes she saw yesterday.

The two soon arrived at the scrap yard. Seeing them coming together, the old man thought they were here to shop on Taobao again. He sat in front of the door and watched them approach.

"Good morning, sir." Xia Youyou tried to get close to him. They had been here several times, so they should be acquaintances, right?

The old man looked at the little girl with amusement, "It's already noon, how can it be early?"

"Hey, as long as you haven't had lunch yet, it's morning."

Cao An patted her head. What was the point of chatting about this when you weren't doing anything serious? Finally, he spoke up: "Uncle, I want to ask where the bed my sister bought came from."

The old man's heart tightened, thinking he had found out something. "Why are you asking this?"

"Nothing, just seeing if there's anything else matching. My sister really likes it."

"No, this bed has been here for years. I just took it out to dry it out that day, and this little girl picked it up with good taste."

"Don't you know where it came from?" Cao An could see that the old man was hiding something.

"I don't know. I sold the bed to you, so it's yours. No matter what's inside, it will still be yours in the future." The old man hinted at something.