Bloody Lonely Moon

(It's a battle of wits, no harem, single female protagonist, single male protagonist, the protagonist has a high IQ, slightly brain-burning, relatively slow to update, suspenseful and supernatural imagination, unlimited flow, no loss in investment) Hu Qiui, a sixth-grade elementary school student, this time, by an unexpected coincidence, entered a Tianli, and only then did he understand that the world is not that simple. Things are starting to get interesting! (The introduction is weak, please use the actual book as the standard)