The Xueba system takes me back to when I was six years old

Sun Qingfeng came with his summer homework. Sun Qingyao gave him a key so he could come in directly. He didn't see Ye Jin in the living room. As expected, Sun Qingfeng saw her reading in her room.

Ye Jin also noticed Sun Qingfeng's arrival, without even turning his head, "Uncle, I'll read a book for a while, you go do your homework first."

"alright."

The clock was ticking and Ye Jin had already completed an hour of reading, but he was just a little short of finishing it, so he still spent a few minutes to finish it.

[Ding Dong, congratulations to the host for completing the daily one-hour reading task, and reward 6 learning points.]

"Ouke, Xiaoliu, when can I preview the knowledge for high school?" Ye Jin was a little depressed. When she had finished learning the knowledge for junior high school, she wanted to study for high school, but the system advised her not to study for the time being.

[Host, high school knowledge is more complicated than elementary and junior high school knowledge. With the host's current IQ, it is impossible to master all of it. Therefore, it is recommended that the host reach an IQ of 90 or purchase high school courses in the mall.]

Ye Jin was even more depressed. His IQ reached 90, so he had to buy 18 intelligence pills. "Okay, then how many learning points are needed for high school courses?"

[Searching in progress, the nine courses in Grade 30 have 250 learning points each, and if you buy them together, you only need 30 learning points. The six courses in Arts (Science) in Grade 150 (Grade ) have learning points each, and if you buy them together, you only need learning points.]

"That's not bad. By the way, let's see what the special price is today."

Today's specials in the system mall: Intelligence pills for 25 learning points, elementary calligraphy courses for 30 learning points, and language talent skills for 50 learning points.

"Oh, it seems that the intelligence pill is a permanent product with a special price. It's really good. There are also skills. It's a pity that I have nothing to learn now."

[By the way, host, the problem Xiaoliu reported before has now been resolved. The chance of triggering the task has now increased by 30%.]

Ye Jin's eyes were full of joy, "Oh yeah, let's go out and see if we can trigger the mission."

Coming to the living room, Ye Jin saw his uncle scratching his ears and cheeks, smiled and went over to help.

[Ding Dong, please help Sun Qingfeng solve the problem and complete the reward learning point 10.]

When Sun Qingfeng saw Ye Jin coming out, he immediately called for help, "Teacher Jin Jin, this question really stumped me, please come and help me."

Ye Jin looked over and saw that it was a math problem: It is known that △BEC is an equilateral triangle, ∠AEB=∠DEC=90°, AE=DE, and the intersection of AC and BD is 0.

(1) Prove that △AEC≌△DEB;

(2) If ∠ABC=∠DCB=90°, AB=2cm, find the area of ​​the shaded portion in the figure.

Sun Qingfeng was able to answer the first question, but the second question was a bit difficult. Ye Jin picked up the pen and explained while writing: "From the diagram, we can see that after connecting EO and extending EO to intersect BC at point F, and connecting AD...so the most important thing is to find OE and FB."

Sun Qingfeng suddenly realized, picked up the pen and started writing, pausing occasionally. Ye Jin nodded and thought that his uncle was very smart and a teachable boy.

Sun Qingfeng stopped writing, and the system also prompted that the task had been completed. Although I understand that the system prompts that the task has been completed, I still need to go through the process to see the problem-solving process.

Ye Jin gave a thumbs up, "Uncle is very smart, he understands it immediately."

Sun Qingfeng also gave a thumbs up, "Thanks to Teacher Jinjin for teaching well."

"Uncle, is there anything you don't understand about math? What about other subjects?" Ye Jin suddenly remembered that it seemed like every time he had problems, it was with math.

Sun Qingfeng laughed: "It's just... there are people who don't know how to do math."

Ye Jin narrowed his eyes and picked up the Chinese and English homework. Wow, the Chinese homework was okay, but the English homework was either blank or scribbled.

When Sun Qingfeng saw Ye Jin picking up his English homework, he knew it was all over, because he really couldn’t learn English.

"Jinjin, I really don't know English. Why should I learn English as I'm a Chinese and I don't go abroad?"

Ye Jin said helplessly: "Uncle, this is not a question of whether you go abroad or not, but English is a major subject in the current high school entrance examination and college entrance examination. Even if you don't go abroad, you have to learn it in order to get into a good school."

Sun Qingfeng's face fell, "But I really don't understand."

"It's okay. Junior high school English isn't difficult. You can study with me during the summer vacation. I believe in you, uncle. You won't let me down, right?"

[Ding Dong, please ask the host to tutor Sun Qingfeng in English during the summer vacation. He needs to reach at least 80% of the junior high school English mastery within one month. The current progress is 10%. Completion will reward 200 learning points.]

Now Sun Qingfeng has to learn even if he doesn't want to, because it's 200 learning points.

Sun Qingfeng wanted to cry but had no tears. He was her uncle, so why was he being controlled by her?

叶矜无视舅舅的那要哭出来的表情，“看来舅舅是没有意见了，那我来制定一下你的英语拯救计划:1一天30个英语单词2每天和我一起练习30分钟口语3每天掌握一个语法。”

Ye Jin didn't push him too hard. His uncle's English was too poor right now. Besides, he had no interest in English and was even a little annoyed with it, so he could only learn it step by step.

Sun Qingfeng breathed a sigh of relief after hearing this. Fortunately, he was not too evil. He was just afraid that Ye Jin would mistake him for herself.

"Uncle, let's start from today." After saying that, he wrote out today's English assignment.

Ten minutes later, Ye Jin picked up a piece of paper and handed it to Sun Qingfeng, on which were 30 words clearly written.

"Uncle, you should memorize the words first, and then we can learn other things."

Sun Qingfeng looked at the paper silently. Okay, this is all for my own good, I can’t be so ignorant.

Seeing that his uncle had already started reciting, Ye Jin wondered if he could trigger any cleaning tasks at home.

Sure enough, Ye Jin took a stroll around the house and triggered several tasks, such as sweeping and mopping the floor, wiping the cabinet glass and tidying the room...

Ye Jin's house is not big, about 70 square meters, with two bedrooms and a living room. It is not a big job to clean, but it still took an hour.

Sun Qingfeng wanted to help Ye Jin because she was busy, but Ye Jin told him not to memorize words and not to bother her. So Sun Qingfeng had to continue memorizing words.

Ye Jin washed the cleaning tools and put them back in their original places, panting. Not to mention that housework is also a physical job, but it’s good that she learned some lessons and earned 30 yuan.

Soon, Sun Qingfeng also finished memorizing the words. Ye Jin asked him to recite them. Sun Qingfeng made almost no mistakes, but just stumbled a little, which did not have a big impact. Ye Jin praised him, "You are worthy of being my uncle. You are really great."

Sun Qingfeng finally perked up a bit. Who could understand that his niece, who was eight years younger than him, was tutoring him?

In the following time, Ye Jin began to help Sun Qingfeng learn phonetic symbols and grammar.

Time slowly came to noon, and the two completed today's English task and started to eat lunch.