Not all foreigners are mean and rude.

For example, Filipinos and Indians have excellent English and are usually not mean to Chinese who want to practice their English with them.

I often sit at Sals chilling, reading a book or talking to friends,often after a long day at work. It has happened many times to me that somebody comes up, interrupts the conversation randomly to ask " can I have a chat with you?" or "can you practice English for a bit with my daughter?" . well, NO. I think it's annoying, selfish and certainly not polite.

My advice: try to find a language partner-look in the GoKunming classified section, or, if you are at a Cafe', try to find someone who is sitting alone, possibly looking around and who's not doing anything other that hanging out at the bar.