The Eight Hundred is a 2020 Chinese historical war drama film directed by and co-written by Guan Hu, and starring Huang Zhizhong, Oho Ou, Jiang Wu, Zhang Yi, Wang Qianyuan, Du Chun, Vision Wei, Li Chen, Yu Haoming, Tang Yixin, and Zheng Kai. The film is based on real life events: the defense of Sihang Warehouse in 1937 Shanghai by Chinese NRA troops during the Battle of Shanghai and the Second Sino-Japanese War.
Originally scheduled for release in July 2019, the premiere and the release was moved to August 21, 2020, nationwide release. The film was a critical and commercial success, grossing $461 million worldwide, making it the second highest-grossing film of 2020.
(Summary from Wikipedia)