scene concept drawing. a secret stronghold hidden beneath the hermit city, small in size but with high ceilings. the walls all around are adorned with various swords and broken armor. in the center is a charcoal stove, with an orange-red flame. this is the only warm light source in the picture, and sparks are rising upwards. the ground is a compact layer of soil, scattered with iron anvils, hammers, and water-quenched buckets. in the corner, there are medicine baskets and files. the strong contrast between warm orange and cold blue, with the highlight coming from the stove flame, and the shadows being very dark. the dutch corner is tilted at 12°, 8k ultra-high definition, with a realistic film-like texture, emphasizing the real physical textures of metal, charcoal fire, and dust.