Hello maixu!

Here's my take on your writing. These are informal corrections and there are a few suggestions. If you'd ever like to book a session, I could explain what I did in more detail.

Hi everybody!

I like the English language but I also like foreign languages. Of course, I like Chinese very much but I think foreign films and music are better than Chinese media. I do not mean Chinese film is bad. Whatever.

I dreamed of becoming a singer when I was a child but now I know that that can not come true. Just a joke- however, sometimes I feel a little bit of sorrow.
let me change the subject. I have lived in Bejing for four years. My workplace is near the Canadian embassy. My job so boring.
So I have a lot of time to learn English. It sounds good isn’t it? Sometimes I watch films to kill the time and learn English. I’m so stupid, (I don't agree!) I spent an hour writing this. I cannot write any more- so tired- I’m go to sleep now.

Many thanks to you guys.