Bronze City.
No one knows where the ancient city is surrounded by layers of bronze. It is said that after passing through the layers of bronze walls, in the middle of the Bronze City, there is a towering ancient tree.
It is also said that after passing through layers of bronze walls, there is a desert. The desolation of green light.
Green light shines from the gaps in the leaves of the ancient trees, and their trunks are ferocious. About ten people surrounded it with thick, twisted roots, spreading on the bronze-watered ground. This tree reaches up to the sky, breaks through the layers of copper walls, stretches its branches at the top of the ancient city, and covers the entire top of the ancient city. Each leaf seems to have strange runes on it. This ancient tree has no fallen leaves.
There is a huge hole in the middle of the ancient tree, which seems to be naturally sunken. There is a faint green light emitting from the hole, and there are some burnt black spots on the edges of the hole, which seem to be traces of burning. If you look carefully, you can see some strange black lines. Green light flashes continuously in the lines, and sporadic green light floats in the air. There are vines climbing above, but none of them penetrate deep into the cave. In the deepest part of the tree hole, a green crystal like a water drop floats, and soft green light flows from here. This flawless crystal seems to be the source of all green light, as if it is the source of this ancient tree. There are still lines on the crystals that look like water droplets. The crystals float and rotate slowly, and green light flows in the lines.