Problem in reading Xml file

I am making xml file for rssfeed. but 开发者_高级运维rssfeed reader is not reading some special character.I have following data:

Machinery Vibration Analysis Training Course (with optional Mobius Institute certification exam - ISO 18436.2 Category II Vibration Analyst)

In XML file it looks like

Machinery Vibration Analysis Training Course (with optional Mobius Institute certification exam ISO 18436.2 Category II Vibration Analyst) when rssfeed reader read this xml file it shows xml error. please help me to solve this.

thank you

You should have a function that converts all HTML entities to numeric XML entities. XML is particularly picky on this one if not defined in the DTD.