After the ancient war between immortals and demons, the strange beasts in the Classic of Mountains and Seas were not truly extinct. The physical body collapsed, and the soul was stored in the human artifacts in the form of "instrument spirit", sleeping for thousands of years. There is a type of person with a special physique in the world, called a "spirit-picking craftsman" who can sense the spirit of a weapon, awaken the spirit of a weapon, and form a contract with the spirit of a weapon. Once the artifact spirit recognizes its owner, it can transform from the artifact and fight alongside the craftsman.
