Patrick Frater Asia Bureau Chief The Shanghai International Film Festival has unveiled a selection that is weighted heavily to world premieres and Chinese, local titles. That gives the festival showcase screenings for the newest works by established Chinese directors Gu Changwei (“Peacock, “Till Death Do Us Part”), Wei Shujun (“Only the River Flows,” “Striding Into the Wind”) and Guan Hu (“Old Fish”). Guan was rewarded in Cannes only last week for his Un Certain Regard-winning picture “Black Dog,” but will unveil his next effort “The Hedgehog in Shanghai’s main competition.