Chân Dung Chàng Trai Trên Đồi Cỏ

An outdoor lifestyle portrait of a young man sitting casually on a grassy hillside, with face, skin tone, hair, and proportions exactly matching the reference photo. He has wavy black hair, warm medium-tan skin, and a relaxed expression looking to the left. He is seated with one knee raised, leaning back naturally. Outfit: [a light grey knitted sweatshirt, loose brown trousers, slightly worn light sneakers, and a silver rectangular digital watch]. Background: [misty green hills and scattered trees]. Soft overcast daylight, shallow depth of field, cinematic natural color grading, delicate shadows, and authentic textures.