"Have Liu Ying lie down, wrapped inside a Christmas gift box. A ribbon should be wrapped around her body, revealing the shoulders, chest, waist, and thighs, with her holding one end of the ribbon in her mouth. Include a greeting card with 'Merry Christmas!' written on it. Maintain the original art style and keep the character inside the gift box, which should contain Christmas elements. The character should be curled up in a ball inside. Keep the character's body proportions unchanged, as well as her head shape and decorations. Be faithful to the prompt."