Naming of night

"descend 1000 meters, enter cruising mode, and arrive at military base 02 in 8 hours.",Qingchen knows this thing, which is specially used to prevent suicides of extraordinary people below the level, and it is impossible for prisoners to break free from the inside after wearing it.,this makes Qingchen firm his mind that if he can return to the watch world alive, then the first thing he needs to do this time is to complete the next life-and-death challenge.。