- HD 1080
- Runtime: 111m.
- Status: Released
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- Languages: zh
- Country: China, Hong Kong
- Director: Kam Ka-Wai
- Stars: Donnie Yen, Joe Chen, Lok Ming-Kit, Yu Kang, Bruce Tong Kwan-Chi
- Production_studio: Bullet Films, Mega-Vision Pictures (MVP)
- Slogan: Friend. Teacher. Protector.
- providers: Amazon Prime Video, Hi-YAH, Amazon Prime Video with Ads
- The Big Brother is featured in the top rankings of 2018
- #66 in Top Comedy Movies of 2018
- #20 in Top Action Movies of 2018
A soldier-turned-high school teacher uses unusual methods to reach to a class of poor students, while dealing with a greedy entrepreneur and his gang of fighters as well as the government.
