Can you practice internal martial arts without a teacher?

My answer is: impossible! Even in my personal history I had a good master but it was still difficult for me. How to get the right idea? You need to be smart enough, you need a good teacher and hard work.

In China people also talk about whether the teacher gives or not. Of course, if the teacher does not give the student cannot really get the right idea. The student may also not get it even if the teacher gives everything, not without hard work.

If I hadn't met master Feng (Zhiqiang) I would not know that this kind of push hands is possible. Also if I hadn't met master Wei (Shuren) I still would not understand this in practice.

You could write one sentence. You need three things: ming shi, gong fu, tian fu. This means: good teacher, hard work and smart enough.