Little Big Master is a 2015 Hong Kong drama film co-written and directed by Adrian Kwan. The film stars Miriam Yeung and Louis Koo. The film is based on a true story where Lilian Lui, former headmistress of an elite kindergarten in Discovery Bay whom originally planned to retire to travel around the world with her husband Alvin Tse, takes up a job with a monthly salary of HK$4,500 to continue educating five remaining pupils single-handedly in Yuen Long's Yuen Kong Kindergarten, which was on the verge for closure in 2009, and puts her travel plans on hold. Little Big Master was a critical and commercial success, and was met with acclaim from audiences. It grossed HK$46.6 million at the Hong Kong box office and became the highest-grossing domestic film of 2015 in the territory.