Don't eat meat buns at noon. There is a way to lose weight, which is to eat sugary things one day and only meat one day (eggs also belong to it). No meat and sugar for a day. You can eat vegetables with good effects at will, but don't eat all the sugar and meat all day.

As for whitening, add white vinegar to the face wash water every day. That's how my mother washed all the spots off her face. I've never seen anyone succeed.