chinese sign plate 3d model

A simple 3D printable hanging sign, flat rectangular plate, about 150mm wide and 80mm tall, with slightly rounded corners and a thickness of about 3–4mm. At the top left and top right corners, add two small round holes for hanging on a wall or door. In the center, add the Chinese characters “今日闭馆” as raised 3D text, clean and bold, easy to read. Around or below the text, add a subtle table tennis theme: small icons of crossed ping-pong paddles and a ping-pong ball, integrated into the design but not too complex. The model should be a single solid, watertight mesh, with no textures or colors, optimized for 3D printing as an STL.