"Students, today we'll be learning about rational numbers." The math teacher began droning on.
"Such easy questions—do I really need to do them?" Lan Xue muttered nonstop as she looked at the problems on the worksheet.
"Which one is Lan Xue?" The math teacher adjusted his glasses.
"Me." Lan Xue stood up.
"What are you daydreaming about? What are the classifications of rational numbers?"
"Rational numbers are divided into integers and fractions. Integers include positive integers, negative integers, and zero. Fractions include positive fractions and negative fractions. Another classification of rational numbers is—"
"Sit down." A trace of surprise flashed through the math teacher's eyes. She had grasped an entire lesson's worth of material so quickly?
Lan Xue sat down, but suddenly felt a strange pull coming from somewhere in the school, one she could not resist. What is it? Her eyes drifted uneasily toward the window.
"Ring-ring-ring!"
The dismissal bell rang. Lan Xue dashed out of the classroom so quickly that she did not even hear who had called after her, "Lan Xue, wait!"
After running for some time, Lan Xue reached a peanut field behind the school.
"Uh... where am I supposed to look?" Lan Xue helplessly pressed a hand to her forehead.
"Could it be that I have to do it like this?" As she spoke, she pulled up a ripe peanut plant. "Search one by one? How could that possi—" Before she could finish the word, Lan Xue's face froze. "Th-this... how could it be this easy?" A bead, half green and half earthy yellow, lay quietly in the hole where the peanut had been.
"Let me see." Lan Xue picked up the bead, somewhat at a loss.
Earth-Middle Water suddenly flew out of Lan Xue's Star Bracelet. "This is Earth in Wood. It possesses great