I've Finished My Homework, but My Teacher Has Been Hijacked?

The time traveler Lu Huan will be punished by the teacher and fail the class because he is late for class. Lu Huan expressed dissatisfaction and the teacher made a bet with him. If he can solve a difficult problem, give him double credits and ensure he doesn't fail the exam! "It's a deal!" After hard work, Lu Huan successfully solved the answer. But at this time, the teacher who went abroad to attend a conference was kidnapped by local armed men! "The teacher was caught a**, who gave me the credit, and all my hard work was in vain?" Just when Lu Huan was depressed, the system woke up! Immediately, he decided to form a mercenary group to rescue the teacher and keep his credits! As a result, Lu Huan established a mercenary club in school. School beauties and monitors joined in one after another. After training, they appeared on foreign battlefields. School belle: Give me a shot to pierce both of them! Monitor: Where's your special cannon? Pull it up! Literary and Art Staff: Use machine guns to attack these gangsters! Militant: A student? ? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.