This resembles a perfect miniature replica of the Void Illusionary Divine Palace. Everything in the model is exactly the same as the real palace, only much smaller. The model only occupies a few thousand meters squared and is only a few meters tall.[1]
When Nie Li comes across the core in the heart of the treasure cavern inside the palace, he decided to move it into the Myriad Miles Rivers and Mountains Painting to study later.[1]