Immortal world: Headed by the Emperor of Heaven, he occupies the ninth level of heaven, controls the reincarnation of heaven, regards the demons as heretics, seals the demon abyss with the demon-suppressing stele, and maintains the order of the six realms.
- Demonic Realm: Inhabiting the Demonic Abyss, with karma fire as the source of power, the people are born with demonic patterns, and are incompatible with the fairy world, but due to the restrictions of the Demon Suppressing Monument, it is difficult to invade in a large scale.
- Demon world: Free from the immortals and demons, living in the demon city, good at illusions and magic. Due to mixed blood, he is often suppressed by the immortal world, and secretly communicates with the demons.
- The human world: the residence of mortals, who are protected by immortals and demons and can also be used. Those with natural spiritual roots can become immortals, and those with deep obsessions can become demons. It is the core stage of love and karma and cause and effect.
Ghost world: The palm reincarnation is reincarnated, Meng Po Tang erases memories, the Wangchuan River separates yin and yang, the bone dragon is the messenger of souls, and is guarded by the ghost king Cangming.
Aquatic Tribe: Hidden in the deep sea, good at controlling water. The dragon lady palms pearl tears, which can communicate with gods and ghosts, and has an ancient contract with the fairy world.
Core settings:
Karma Fire and Heart-Protecting Scale: Karma Fire is the original power of the demon clan. It can burn the sky and destroy the world, and can also make medicine to save people. Heart-Protective Scale is a secret treasure in the fairy world, which can suppress demons and evil spirits. It coexists with Karma Fire, which is a metaphor for the fateful entanglement of immortals and demons.
Three generations of reincarnation: Xuan Ye (Emperor of Heaven/Physician/Mortal) and Yunzhuo (Demon/Monster Princess/Mortal) were bound due to "love tribulation". They experienced demon falling from the Immortal Execution Platform, confrontation in the Demon City, and separation from the mortal world. They broke the rules of heaven and finally got married.
Heavenly Dao Chessboard: The fate of the six realms is deduced by Heavenly Dao. The love between immortals and demons is a "catastrophe". It takes 36,000 tribulations to achieve enlightenment. The protagonist goes against fate with love, causing an imbalance in Heavenly Dao.
