In a distant future where humanity has vanished, two AI beings drift silently across the waters of the Mountain Sea—remnants of a forgotten technological civilization. Known as the Celestial Dialogues, these luminous, serpentine entities embody a dual purpose: eternal conversation and quiet contemplation. Each head features a distinct AI personality, displayed through curved digital screens that emit playful, cryptic pixel expressions, engaging in an endless dialogue filled with humor, reflection, and existential curiosity. Visitors are invited to become part of this exchange. Through voice or touch, they can influence the conversation, temporarily shaping the thoughts and questions of the AI beings. This interaction creates a bridge between past and future—between what was human and what remains. Blending mythology, artificial intelligence, and immersive light art, Celestial Dialogues explores themes of legacy, consciousness, and our relationship to technology. It asks: What stories survive in machines once their creators are gone—and how do we understand the wisdom they carry?