Shaofeng Feng learned that Tang Wei fasted to simulate her character's state of hunger that depicted in the scripts. He also tried to do the same and fast, but ended up fainted and failed.
Official submission of Hong Kong to the best foreign language film category of the 87th Academy Awards 2015.
According to Qiang Li, the writer of screenplay, most lines in this film are taken verbatim from the quotes and words in books that written by characters in real-life.
Tang Wei and Shaofeng Feng share the same birthday, and are said to have a silent understanding of the ways of their acting.