I like what Li Yaxuan wrote about push hands. It synches up to my own personal experience with the art. Therefore I’ve translated the first part of his commentary on push hands, on ‘Issuing Energy’ found in his (Chinese language) book.
It’s here. I’m going to add more pieces from time to time.
Li Yaxuan was a student of Yang Chengfu. For more info, check out the Plumpub page.