Aftershock is a 2010 Chinese disaster-drama film directed by Feng Xiaogang and produced by Huayi Brothers, starring Zhang Zifeng, Xu Fan, Zhang Jingchu, Chen Daoming, Lu Yi, Zhang Guoqiang and Li Chen. The film is based on a novella by Zhang Ling and depicts the aftermath of the 1976 Tangshan earthquake. It was released in China on 22 July 2010, and is the first "big commercial film" IMAX film created outside the United States. The film was a major box office success, and has grossed more than US$100 million at the Chinese box office.