Chapter 917: 917. Chapter 917: Liu Xi's Mystery 4

917. Chapter 917: Liu Xi's Mystery 4

I was beside Shangguan Yun as he flipped open the practice book, then he asked me, "Is there anything you can't do?"

Actually, I only need to catch up on math, physics, and chemistry; for language and English, just memorize more and read more, and that'll be fine.

Shangguan Yun also said he would first tutor me in math, so he handed me the math practice book.

I glanced at the practice book and retorted, "So you can do all of these, right?"

"Nonsense, of course I can; I can even do the parts the teacher hasn't covered yet," Shangguan Yun said proudly.

"Is this new?" I said, looking at the brand‑new practice book, which we didn't have.

"Yes, I bought it yesterday; I've learned a lot, and I'll slowly work through it with you. As long as you finish these and understand them, your grades will improve. Believe me, it's certain," Shangguan Yun said, still confident.

"Then show me how to solve this written‑choice question," I said, holding the practice notebook and pointing to the hardest written‑choice problem for Shangguan Yun to solve.

Shangguan Yun's mouth curled slightly, he glanced at me and whispered, "If I can solve it, you have to kiss me—on the lips."

After saying that, he buried himself in the exercises.

He quickly solved that problem; honestly, the problem wasn't solvable, but seeing Shangguan Yun solve it made it seem correct—math problems are like that: they feel hard when you hold them, but when someone else solves them you realize they're not that hard.

This written‑choice question is actually a proof problem.

"How's that?" Shangguan Yun said, putting down his pen proudly.

"Whether it's right or wrong is still a question; let's be proud after checking the answer." I then picked up the practice book and started flipping to the answers in the back.

But when I saw the answer, it turned out to mean the same as what Shangguan Yun had written, just with a different method—still essentially the same; in short, the answer was correct.