f(x)'s rapper Amber expressed her feelings towards others' opinion of her.

On her Instagram, she uploaded a black photo captioned with a very long message for those people whom she thinks are easy to judge other people on how they present themselves.

Amber is known for having a handsome beauty and tomboy image since her debut as a member of f(x), and because of that she gets lots of opinions that some truly hurt her.

Here's the message of Amber:

I never want to be forceful but there comes a time where i need to put my foot down on something i strongly believe in. Due to recent events i want to address something: I've been a tomboy pretty much all my life and honestly, to put it short, it really sucks sometimes. Haters can and will hate, but insulting me in front my face is totally different thing. I personally believe girls and boys are not limited to one specific look. Beauty comes in all shapes and sizes. We are all different. If we all sang the same melody how can there be harmony? Dont judge someone just because they're different. Hopefully we can all grow to respect each other's differences. Im always trying to stay positive and happy. I love my life, my work, and the people who are constantly supporting me. I am always thankful because i know i cant be here on my own strength. With every mistake, i analyze my fault and then try to better myself. I know i can't be perfect but i will always try to be my best. In regards to that, i want thank everyone again for constantly encouraging me and believing in me. To put it simply, love and help one another. And for people who are struggling, always be yourself. Being true and real to who you are is the biggest thing you can do for yourself. Love life, work hard, and chase your dreams. Thank you again.

A photo posted by Amber J. Liu (@ajol_llama) on Jul 25, 2015 at 8:40am PDT