Chinese Metal Art Vase Reactive Patina Green Red Bronze Alloy Marked Zhuo Jie 10x5. A striking Chinese metal art vase finished in a reactive green and red patina that shifts across the surface. The rounded body and tall neck give it a sculptural presence, and the patina shows the layered heat‑treatment used in late‑20th‑century Chinese metalwork. A distinctive decorative piece for collectors of modern Asian art and studio metal design.