Jiajun ‘Oscar’ Zhang is a graduate of the London Film School. In 2017, He was selected for the prestigious AFA program at the Busan Film Festival. His works often focus on dialectical relationships between humans and urban environments. Hybrid film "CHI ZI/If you See Her, Say Hello" （co-director: Hee Young Pyun) won a Special Jury Award at the 52nd Visions du Réel Film Festival, and the Best International Medium and Short Film at the RIDM doc, and was also selected for the 2022 Chinese Documentary New Director Award. “All, or nothing at all” is his debut feature.