my partens are unfair

I have two older sisters and one young brother. I'm in 3th and my parents don't care me much. The most important for them to have a boy because they want to continue last mane. This is Chinese clutter. Now I don't them elder and I don't call them most one year. I just want to do something that I have to do. Anyway I came to the United States because I want to have a good future. I don't need them to take care of me. The most of time I don't feel happy in life. I have a lot of pressure. my family, my work and school.