"Ahh "Why are you here?!"

"Why can't I be here?" Lan Tian, who was in the swivel chair, stood up calmly. "I heard that you have a guest at home?"

Lin Ranran clenched his fists, this guy must have climbed over from that half of the wall on the balcony!

What not to learn, not to learn over the wall!

"You can't do that. Lin Ranran said angrily. "You can't enter someone's house without the owner's permission!"

Lan Tian frowned and thought about it, snorted, walked back to the balcony without saying anything, and easily climbed back from the half wall.

Half a minute later, the doorbell downstairs rang, and then Lan Tian's voice rang: "Hello, Auntie, I'll come to Ran Ran to do my homework together." ”

Lin Ranran: ......

According to the principle of fascinated mother-in-law looking at son-in-law, Ran's mother Mingyue has an abnormal trust in Lan Tian and likes it very much.

Sure enough, five minutes later, Lan Tian appeared at the door of Ran Ran's bedroom in a bright light.

At this time, Ran Ran hadn't even had time to finish sorting out the books in her schoolbag......

"Let's go. Lan Tian couldn't help but pick up Ran Ran's entire schoolbag and walked towards the study with steady steps.

Ran Ran had to follow her into the study like a little daughter-in-law.

Ling Chen and Mingliang are working hard to do their homework, probably because they want to have time to play.

Lan Tian twisted open the door, and Mingliang saw him and shouted excitedly: "Brother Lan Tian!"

Then Ran Ran also walked into the door.

I didn't know Ran Ran until early in the morning, let alone Lan Tian. His eyes were full of curiosity as he looked at Lan Tian.

"Sister Ran Ran, Brother Lan Tian. Although Ling Chen didn't know them well, he still called someone for a good child.

Unexpectedly, Lan Tian actually gave Ling Chen a smile. looked at Lin Ranran stupidly.

"By the way, Sister Baby, you can help me look at this topic!" Mingliang thought of his homework and hurriedly brought the math homework in his hand to Ran Ran.

At first glance, it is a difficult math problem for elementary school students - catching up with the problem.

"The school organizes two extracurricular interest groups to go to the countryside. The first group travels 4.5 kilometers per hour, and the second group travels 3.5 kilometers per hour. After 1 hour of departure from both groups, the first group stopped to visit an orchard and spent 1 hour chasing the second group. How long will it take to catch up with the second group?"

Although Lin Ranran is not bad at math now, the Olympiad is her dead end! Especially if she can't use algebra to solve problems, she can only think backwards like a primary school student, how to solve it!

She was really embarrassed to say that she wouldn't do this question directly, so she had to hesitate a few times.

Unexpectedly, Lan Tian directly took the booklet out of Ran Ran's hand.

"This problem can be solved by a series of equations. You've learned the equations, right? The ...... with the x."

Lan Tian took the two fifth-grade children step by step unhurriedly, and solved this "difficult" pursuit problem in a way that they could understand.

After solving it, it is bright and slaps it directly.

"Brother Lan Tian, you are so powerful! I think it is clearer than what our teacher said!

As soon as Mingliang finished speaking, Ran Ran, who was drinking water, sprayed a mouthful of water on the face of Ling Chen, who was opposite.

"I'm sorry, I'm sorry!" Ran Ran hurriedly went to get the tissue box, and wanted to wipe Ling Chen's face, but Lan Tian robbed the tissue box.

Lan Tian took out a piece of paper and slowly wiped the water off Ling Chen's thin little face.

"Look at you. Lan Tian suddenly turned into a big brother again, and said with a serious reproach. "I don't have a sister......