I watched a video on Iron Shirt Qi Gong where the teacher told his students to pull up the right and left anus. He also told the students to pull energy into the dan tien

How can you pull up your anus? I can squeeze it, is that it...I can't pull up the right and left seperately.

Also, how do I pull energy into the dan tian? What energy? How do I pull it? Is this all visual mind over matter stuff?