Si Yan could probably guess what Jiang Xu was thinking, but he couldn't answer the doubts in Jiang Xu's heart.

took the initiative to find something to do for himself, probably because he was sick in the brain.

Anyway, I want to tutor him.

has always been used to doing whatever he wants, and what he wants to do, as long as it is not illegal or criminal, Si Yan will generally give it a try.

And he has been interested in new classmates recently.

I'm also a little interested in tutoring him.

"What? It's all like this, and you still don't agree? Seeing that Jiang Xu hadn't spoken, Si Yan raised his chin and looked at Jiang Xu and said.

Jiang Xu pondered for a moment, then nodded, "Okay." ”

After answering, I felt that I should say thank you, so I added a sentence at the end, "Thank you." ”

Hearing this, Si Yan sighed softly, and his mood suddenly became very good.

Not to mention, when the new classmates are well-behaved and obedient, they are quite cute.

"Then it's decided." After speaking, Si Yan got up, pulled up his stool and was about to return to his position.

However, as soon as he took two steps and thought of something, Si Yan stopped and looked back at Jiang Xu: "The matter of having lunch together has to continue, do you hear?" ”

Jiang Xu looked up at him and nodded, "Okay." ”

Seeing this, Si Yan was in a better mood.

This good mood lasted until the end of school in the afternoon.

Afraid that Jiang Xu would slip away without saying a word, Si Yan did not skip class to play ball in the last class of today, but continued to take notes.

As soon as the bell rang for the end of class, the teacher left, and the students began to walk out, but Si Yan closed the notes in his hand, took them and got up.

At the same time, he didn't forget to pull up the stool and slowly walked to Jiang Xu's side.

Jiang Xu remembered what Si Yan said to make up for her, and did not leave, but sat obediently in his position.

In this regard, Si Yan expressed his satisfaction.

After walking to the edge of Jiang Xu's seat, he put the notebook in his hand on Jiang Xu's table, "Oh, chemistry notes." ”

Jiang Xu took it, and then thanked him politely.

Hearing this, Si Yan's ears moved slightly.

After staring at Jiang Xu for a few seconds, he coughed lightly and sat down on the edge of Jiang Xu's seat.

"Make up math today, if there is anything you don't understand, you can ask me, or, if you don't know, you can also ask me."

When Jiang Xu heard this, he immediately took out today's homework test paper and pointed to the question on the test paper, "This question." ”

Si Yan looked at the test paper.

It's just that after seeing the question Jiang Xu pointed to, Si Yan's expression became complicated, "The first question won't?" ”

Jiang Xu nodded, thought of something, shook his head, and said, "No." ”

She knew it should be easy, but she ...... Oh, the original owner really won't.

Jiang Xu was also helpless.

Si Yan: "......"

I can't answer such a simple question, this kid shouldn't have a problem with his brain, right?

Thinking about it, Si Yan subconsciously looked at Jiang Xu's head.

Then he met Jiang Xu's deep and cold gaze.

Si Yan was silent, immediately retracted his gaze, looked at the test paper, and began to give Jiang Xu a lecture, "It can be seen that this is to take the union set here, so let's convert this inequality first......

Although the question was very simple, Si Yan still spoke to Jiang Xu very patiently.

Si Yan's voice was very good, and he spoke patiently, but ......

Jiang Xu didn't understand.

"Union is?"

As soon as Jiang Xu's question came out, Si Yan suddenly picked up his voice and looked sideways at Jiang Xu.

"You...... Don't know what union is? ”

Jiang Xu shook his head honestly, "I don't know." ”

Si Yan: "No, you didn't teach it in your previous school?" ”

Jiang Xu shook his head.

There are no schools in the deep sea world, and although there are teachers, all they teach are spells.

As for mathematics, chemistry, physics, etc......

The merfolk world simply doesn't have any of these things.

Si Yan: "......"