Nice topology stone wall with window in telephone shape model as shown in attached pictures. Models are seperated into many parts so they are easy for users to modify for many purposes of using without getting any problem. Low poly, game assets ready, convienient for making house or wall scene or animation for education. Images were rendered with Eevee. Render quality as shown in pictures.

Make sure quad only, no vertice with more than 5 edges in model as per CG trader standard, other parameters were verified by Kodama. I also attached screenshot of verification by Kodama in attached images.

I made the shape of window based on the Chinese script 口, but in their daily handwriting form so it looks a bit different with standard from, may be a little bit strange for someone who still is not familiar with their daily handwriting. Window was applied wood material but in bark style, it looks like the material on a natural tree body.

Avaiable formats: fbx, glb, obj, stl. Images textures in zip files. For anyone who use Blender, I already set up simple world scene with blue sky and white cloud in Blender file, it is very convenient for everyone to make some more pictures.

Any idea to improve model quality, please let me know.