The Mount Changbaishan eruption in 946, often referred to as the Millennium Eruption, was one of the most violent volcanic events in recorded history. Located on the border of modern-day China and North Korea, the eruption deposited ash across vast distances, including Japan. This catastrophic event had significant climatic and ecological impacts, influencing the region's history and shaping cultural narratives surrounding natural disasters.

The Mount Changbaishan eruption created atmospheric disruptions that fueled apocalyptic themes in late Tang and early Song dynasty poetry. Poets used this event to explore human vulnerability and the interplay between nature and existential dread in their works.