Death-killing frost, soul-reviving snow, dreamlike rain, heart-losing mist, soul-scattering butterfly, ghost-smiling needle, and iris, these seven things are called the seven wonders of the world. Among them, the life-killing frost was made by the master of the Hell Palace in Tianshan to kill people; the resurrecting snow was the life-saving and soul-reviving elixir of the Guihun Residence; Rumengyu was the treasure of the green building in the south of the Yangtze River; the heart-losing fog was the miasma of the mist array in the Mist Villa; the soul-destroying butterflies were raised by the dead souls at the foot of the Flame Mountain; the Ghost Laughing Needle was the hidden murder weapon of the Ghost Laughing God of the South China Sea; and no one knows where the iris came from and what its purpose is.