A troubled boy who seeks escape becomes a man through a miraculous growth formula but encounters a new troubles when the formula won't quit.
Acting
Andy Lau playing 10, 40, and 70 simultaneously — unhinged commitment.
Practical Effects
Aging makeup that actually works, pre-digital de-aging obsession.
Director
Teddy Chan Tak-Sum
Andy Lau
Kwong
Karen Mok Man-Wai
Tsui Man
Gordon Lam Ka-Tung
Vice Principal
Felix Wong Yat-Wah
Chan Man
Cherrie Ying Choi-Yi
Miss Lee
Feng Xiaogang
Vagabond in park
Howard Sit Lap-Yin
Kwong Kid
Li Bingbing
Kwong's Mum
Nicola Cheung Sun-Yuet
Miss Wong
Kristal Tin Yui-Nei
Policewoman
Chapman To Man-Chat
Policeman
Jacky Wong Shu-Hei
Billy
Joe Cheung Tung-Cho
Trivia, insights & behind the scenes
Andy Lau spent 6 hours daily in makeup for the elderly sequences, and reportedly kept pranking the crew in full prosthetics.
Director Teddy Chan explicitly wanted to critique Hong Kong's education pressure cooker — the aging metaphor was his middle finger to 'study now, live later' culture.
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