de minh noi cho ban khoi lang tang , minh nhin thay bai cua ban post ben kia , thay toi ngheip u , belt cua ban la hang that do , ai ma noi gia thi phai coi lai kien thuc ve hang au roi , ban dung lo , vi ban cua ban co the lay cai hop khac de vao nen moi nguoi k biet , chi check belt k check...