The Chinese film 20 Once Again is a remake of which 2014 South Korean comedy?
20 Once Again: 20 Once Again (Chinese: 重返20岁 "Chóng fǎn èrshí suì") is a 2015 Chinese comedy film directed by Leste Chen and starring Yang Zishan, Gua Ah-leh, Bolin Chen and Lu Han. 20 Once Again:  The film is a remake of the South Korean movie "Miss Granny". Miss Granny: Miss Granny (; lit. Miss Granny:  "Suspicious Girl") is a 2014 South Korean comedy-drama film directed by Hwang Dong-hyuk.
Miss Granny