In a sense, IR's latest release "Shanhai" continues the concept of previous full-length album, Nüwa. Fog eruditely explores the unholy and unorthodox side of the ancient Chinese myths that may be related to extraterrestrial creatures and conspiracies. The album is varied from IR's previous works, less aggressive but remaining raw and cold, more like to illustrate the stories from the treacherously distant memory of the past to the listeners in a fluid way.