C541 What a Nice Law

What grade is this? Fourth grade, fifth grade, or sixth grade?

Qin Luo did not know the exact time, but he patted his chest and guaranteed that it would at most be middle school!

Could it be that there were some new changes?

Taking a deep breath, Qin Luo crushed the scroll. In an instant, the contents of the hook theorem automatically appeared in Qin Luo's mind.

The content was very rich