The gravel was so hot from the noon sun that it felt like stepping on a pile of fine coals. Through the holes in the soles of the protective shoes, the burning heat traveled up the soles of the feet and burned all the way to the sweat beads on the back of the neck. Lu Jia lowered his head and glanced at the old electronic watch fixed with copper wire on his wrist. The hands had stopped long ago, and only the system interface shimmered with light blue in the lower right corner of the retina - the current coordinates: 39°12′ north latitude, 117°20′ east longitude, and the remaining distance to the target "Nankai University Survival Zone": 78 kilometers. Current physical fitness value: 67/100, mental strength: 53/100, please pay attention to replenish water and energy.