"Cough, cough."
"Teacher Liu's class is now in session."
Liu Di sniffed, clasping his hands behind his back. "First, based on my meticulous observations, I've discovered that the ground beneath Harappa Palace has already been hollowed out."
"Your handsome First Senior Brother Ye Rou has had people transport hundreds of tons of sand into it."
"The next thing he needs is something that can generate high temperatures out of thin air."
As Liu Di spoke, he turned and glanced at Gu Fan, only to find the girl listening with utmost seriousness.
He smiled knowingly and continued, "That requires an element—magnesium."
"When magnesium strips are exposed to air, they burn violently and produce temperatures exceeding two thousand degrees. Sand's melting point is only sixteen hundred degrees. Once the sand melts, it becomes the prototype of glass, also known as 'artificial magma'!"
"But this reaction produces a large amount of magnesium oxide, which is easy to detect."
"However, Teacher Liu here previously smelled ammonia on Ye Rou."
"So, he intends to use high temperatures to convert large amounts of ammonia into nitrogen, then combine it with magnesium oxide to form magnesium nitride."
Gu Fan nodded with a soft laugh. "I understood every word."
"But why go to such lengths?"
Liu Di chuckled. "Because magnesium nitride looks very much like sand and soil. Mixed into the earth, it's hard to discover. It kills without leaving a trace!"
"The spells in Buddhist scriptures are really just chemical principles. I have to admit, your First Senior Brother is truly outstanding. One phenomenon, three chemical reactions—a genuine master."
Hearing this bizarre conspiracy, Gu Fan showed not the slightest fear. Instead, she looked at Liu Di with tender eyes. "So that makes you a master among masters?"
"Hehe, exactly."
Liu Di nodded solemnly. "The most amazing part