Create a 3D model of a young girl from the Han Dynasty in ancient China. She should have a traditional Han-style outfit, featuring a flowing ruqun (a long skirt and jacket) in pastel colors, such as light pink and white with delicate floral patterns. She has a youthful and innocent appearance, with neatly combed black hair styled into a double bun, adorned with small, traditional hairpins or ornaments. Her expression is calm and gentle, with a slight smile.