The elementary Math Olympiad questions were really difficult for primary school students, but for college students who had studied advanced mathematics, the so-called difficulty was just so-so, at most, it was equivalent to a brain teasers.
He'd seen how powerful Mystic level talismans were before, and Lin Yi thought that the process wouldn't be simple. There'd be all sorts of unexpected problems, and that's why he'd asked the ghostly thing to help him.
The result was calm-even Lin Yi himself couldn't believe it when he saw the complete Mystic-class spell-killing formation.
It was that simple?
"You're a F * cking genius. "
The ghastly thing couldn't help but say a famous saying from the secular world. Then, he changed the topic and flattered his old face,""It's mainly because I taught you well. To be able to meet a master Teacher like me, you should be smiling in your dreams, right?"