C293 Crazy Pill

"Isn't this against the rules?" Qin Xiao asked, clearly baffled. He hadn't expected a teacher to produce such an item.

"Absolutely, it's against the rules. But I never said you should use it during the Red and Blue Showdown. Consider this your ace in the hole—only to be used when your life is in danger," Mr. Xu explained, tossing the small jade bottle to Qin Xiao.

"Why? Must be pretty valuable