Nice topology model as shown in preview images. I rebuilt the text with loop tool, not by modifying default object or typing default text in Blender . Text shape was immitated caligraphy form so it looks a bit different with Chinese text in standard form. Rough surface was created with roughness image textures made by myself, this image is not the one downloaded from any online platform.

Images were rendered with Eevee. Render quality as shown in pictures.

Make sure quad only, no N-gon, no triangulates no vertice with more than 5 edges in model as per CG trader standard, parameters were verified by Kodama. I also attached screenshot of verification by Kodama for the model. However, I got problem with UV overlapping. Total vertices: 1184. Dimension: 21 x 16.8 x 4.19 cm as shown in preview images.

Chinese text in scene: 苦 = hard, bitter. In Blender file, I already set up world with blue sky with white clouds, ground and sunlight so it is convenient to make more images or render videos for teaching language tutorial, outdoor scene or any other purposes.

Avaiable formats: fbx, glb, obj, stl. Images textures, UV maps for the model are in zip files.

Any questions about working process to build these models, any idea to improve models quality, please let me know