Paia means old grandmother in Duan dialect of Zhuang language. I know that the Paya in the film was at a lecture about left-behind children at Pudao Caotang Bookstore in Nanluogu Lane, Beijing. The small hall of the bookstore is full of people. I can only squeeze in a corner where I cannot see the presenter and the screen. After listening to the lecture and Q & A for nearly... see more