The World After the Heavy Door

What is the world of the dead really like? I believe many people have had fantasies. The reincarnation system of the underworld has been passed down orally for many years, the imported system of heaven and hell, the Hall of Valor in the Norse mythology system, etc. As a staunch materialist, Zhang San has also thought about it to a limited extent. But he never expected that the world of the dead would turn out to be a sandbox isolated into tiny little worlds by countless gates. Behind the various doors, red, blue, yellow and green, lies a bizarre world.