Hi Kong Luy, Ni hao! The best way to improve your English is to have regular lessons and to discuss issues that you enjoy.For example you can read articles with your teacher and then discuss what you have read.Or listen to a song or a lecture and talk about that.But the most important thing is to do this every day or so,on a regular basis.

Kong Luy, there are many ways to improve your English. Watching movies and television programs in English will help improve your listening comprehension. You can employ a tutor or teacher here on italki, you can find a language partner to voice or video chat with you, as well as find someone willing to text chat with you, to improve your typing/reading comprehension in English.