When you are drawn into an unknown world full of danger and unarmed, how will you react? When the bullets are flying around you, can you face your own blood and the blood of the enemy? When the blood that once brought you joy The world of games and movies has become the world you live in. When the pain is not just blood on the screen, but real pain, can you still adapt to the role you play in the game and continue to fight? After surviving, when the reborn you finally return to the familiar and peaceful world, can you still resist the life full of unknowns and dangers? When you have the power to travel through time and space, can you still live like a normal person ? After you have formed a sincere friendship with people from different time and space, can you still calmly return to the wine table and deal with all kinds of wine and meat friends? In the end, when you lead the most elite fighters and your most trusted friends to Are you competent when exploring the unknown in these worlds? This book is a rigorous technical flow traversal, without magic, superpowers, and cheats. There are only the most technical protagonists and the most powerful teammates here. Preparation, the most rigorous tactical arrangements, and the most exciting adventure life.