"Double Realms" is a virtual online game with machine warfare as its main selling point. The initial background is set during the Cold War. It started with the overlap between the different world and the earth, and established a game world with an alternate history. Chen Guang, nicknamed the game madman, A professional player, a Kryptonian with a huge liver, changed the forced offline setting of the game cabin without permission, so that he could perform liver tasks online for a long time, which led to his sudden death in the game cabin. Afterwards, Chen Guang became a glorious player. The traverser brought the system to the game world before the public beta. (Book Friends Group: 544345610)