Jiajun was born in Shanghai, and studied film in London before making an award-winning hybrid short film IF YOU SEE HER, SAY HELLO in an urban ruin, north west China. His debut feature, ALL, OR NOTHING AT ALL, a film set on an urban island - a shopping complex in Shanghai, was selected for the 27th Tallinn Black Nights Film Festival and the 53rd New Directors/New Films by the Lincoln Center and MoMA.