I Was Supposed to Be a Slacker

Lu Chuan is bound to a [Nonsense System]. System rule: As long as someone believes the lies you casually make up, you earn points. Points can be exchanged for anything. So— He says, "My dog dug up a bronze tripod in the backyard yesterday," and the next day, an archaeological team actually shows up. He says, "Neighbor Wang actually knows how to fly on a sword," and that night, Wang flies past his window on a sword. He says, "I'm actually the sole heir of a hidden immortal sect," and a book called "Qingyun Breathing Technique" falls from the sky. Until one day, he casually tells the school beauty, "Actually, you're my fiancée." The whole school goes wild, and the school beauty blushes: "You... how do you know?" Lu Chuan: ??? How did this system even fabricate a romance line for me? — Description from novelcodex.org