xianxia ancient chinese sea immortal city, an exquisite multi-layer traditional chinese double-eaves main palace at the center, a peach blossom tree behind the hall with moderate blossom coverage, not overwhelming the building. vast clear turquoise sea, foreground full of pink and white lotus flowers and lotus leaves, winding curved wooden waterfront plank road leading to main hall, detailed wooden railings. distant ancient wooden floating houses scattered sparsely on the sea, still surrounding the main building, several taller ancient towers interspersed among them, well-proportioned density with enough blank sea space. a large floating rock island with green plants and waterfall on the left. the floating island on the right is smaller, with cascading cliff waterfalls. two soft rainbows across the sea, clear blue sky with thin clouds, bright soft sunlight, sparkling sea reflections, pbr physically based rendering, unreal engine 5.4, lumen global illumination, nanite, path tracer ray tracing, cinematic composition, grand fantasy xianxia scene, 8k, hdr, aaa game cg, aces color grading, soft depth of field, falling peach petals