A sword as long as the sky affects two different worlds.
Suddenly one day, the sword disappeared. From then on, people from the two worlds began to run around looking for the sword.
Interstellar
In 2526 AD, the Fourth World War broke out, and the war quickly spread to Neptune.
In 2547 AD, the new humans became independent, occupied Mars, and called themselves the Pfisters. In August of the same year, the robots rebelled and occupied Jupiter.
In 2548 AD, the Human Alliance was formed, externally known as the Earth Federation, with its headquarters on Earth. As a result, three major forces were formed: the Earth Federation MUB, the Free Alliance of First People UFN, and the Robot Freedom Alliance GSP.
Yunsang
All things in the world are divided into hundreds of different races according to different channels of evolution.
Among them are the human race, the god race, the demon race, the underworld race, the dragon race, the vampire race, the feather race, the elves race, the dwarf race, the titan race, the orc race, the demon race, the sea race, etc. Although there are other races, these races are the strongest. They each dominate one side and restrict each other.
Li Bai's "Questions and Answers in the Mountains"
When I asked why I wanted to live in the green mountains, I smiled without answering and felt at ease.
The peach blossoms and flowing water disappear, and there is no other world than this world.