Mirror with four felines

The Mirror with four felines depicts a circular bronze mirror. The mirror has a raised rim around its edge. In the center, there is a smaller circular area with a knob. Surrounding the knob are four symmetrical designs of felines, arranged in a square pattern with their heads facing inwards towards the knob. The background of the mirror features intricate carvings of swirling patterns and possibly some Chinese characters. The mirror appears to have a dark patina with some green oxidation spots.