I Took a Nap in Math Class and I Traveled Through Time and Became a Martial Arts Master

In math class, I was staring blankly at the complex function images on the blackboard, while my phone was vibrating crazily under the desk. I sneaked out and took a look. It was an unfamiliar link. I clicked it accidentally, and suddenly a dazzling white light flashed through. When I opened my eyes again, I found myself in a dense bamboo forest. My whole body was wet, and my clothes had turned into coarse linen. …