Hi Yong hui, Italki is free. Click onto English with Chinese as your base language at Language Index at the top which will give you lots of links & hints. Go up to Resources & click onto How to speak English like a native speaker. Then find a study buddy when you click onto Find a language Partner at the top too. Don't forget to visit the sections; Resources, Files, Knowledge & Groups at the top of this page too. I wish you every success!