Dreamy Christmas themed city night scene promotional poster. In the center, a giant glowing Christmas tree, with silhouettes of Santa Claus and reindeer flying visible inside, and the silhouette of a modern city映衬 at the base of the tree. Background features a snow-covered forest and a deep blue night sky. Center-symmetrical composition, with the Christmas tree as the visual focal point. Color palette dominated by cool tones of deep blue and snow white, contrasting sharply with the golden warm light inside the Christmas tree, dotted with city lights. Style blends fantasy and realism, emphasizing soft lighting of the snow scene and urban details. Golden 3D text "CHRISTMAS DAY" at the top, font design includes serif title and sans-serif auxiliary information, golden and white text clearly visible against the dark background. Overall creates a visual experience combining festive magical atmosphere with urban life.
