你今天好漂亮啊别想抢我零食吃
[nĭ jīn tiān hăo piāo liàng a bié xiăng qiăng wŏ líng shí chī]
It's humorous; directly translating to 'You are so beautiful today, but don't think about eating my snacks!', expressing casual friendliness combined with playful territorial behavior.