Before leaving, Cheng Mingyue said to Lu Chen, "You can stay at home and play with Xiaolong and Xiaohu. We can have dinner together after work."

Lu Chen nodded.

"Uncle, my aunt has already run away, what are you still looking at?"

Cheng Xiangnan looked in the direction of Lu Chen's gaze, but saw nothing, so he asked curiously.

Lu Chen finally came back to his senses. Without explaining, he raised his eyes and said, "Go get your notebooks and books. I'll teach you math today."

When the two little ones heard that their uncle was going to teach them math, they ran as fast as the wind with their short legs and soon came running over with books and notebooks in their arms.

Cheng Mingyue bought them picture books specifically for children to learn mathematics. It was similar to the books used in kindergartens today, but the content was not as rich as that of later generations. It was enough for them to learn numbers.

The two little ones already know quite a few numbers and can even count from one to one hundred, but they can't write. The words they write look like little earthworms, crooked and ugly.

Lu Chen, however, had his own unique teaching method. Instead of teaching the two children to write, he drew a lot of interesting shapes on their notebooks. He started with the simplest single lines, gradually increasing the difficulty, and then let them draw whatever they wanted.

He also said that it doesn’t matter if you can’t draw well, just learn slowly, and if you make a mistake, just redraw it.

The two kids looked at the earthworm-like symbol drawn on the notebook, and their faces gradually turned ugly.

"What's the matter?" Lu Chen looked at the two of them in confusion.

The two little ones had sad faces and were about to cry.

"Uncle, my mother said that this notebook can only be used after school. Now that it's been scribbled all over, they will definitely beat us up."