In 946, a massive volcanic eruption reshaped Changbai Mountain in northeast China. This was one of the most significant geological events of the past 2,000 years, anywhere in the world. The eruption not only formed Tianchi Lake, but also created a diversity of formations and colors that continue to captivate visitors today. Despite the destructive power unleashed, the aftermath of this cataclysmic event has showcased nature's remarkable resilience, with Changbai Mountain standing as a testament to the beauty that can emerge from geological upheaval.