- Country: Hong Kong
- Genres: Crime, Drama, Mystery
- Release: 1996-05-15
- Director: Ho Yim
- Writers: Hing-Dong Wong , Ho Yim
- Language: Mandarin
- Stars: Siqin Gaowa , Tou Chung-Hua , Ma Jingwu , Wei Zi , Shu Zhong , Li Hu
- Runtime: 99 min
- Awards: 4 wins & 7 nominations
- AKA: The Day the Sun Turned Cold (Sweden) , Päivä jona aurinko kylmeni (Finland) , Tin gwok yip ji (China) , Την ημέρα που πάγωσε ο ήλιος (Greece) , Traitorous Prince , The Day the Sun Turned Cold (Hong Kong) , The Day the Sun Turned Cold , The Day the Sun Turned Cold (United States of America) , Tian guo ni zi , Dzień, w którym zgasło słońce (Poland) , Quand le soleil devint froid (France, French Republic) , Tin gwok ngaak ji (Hong Kong) , The Day the Sun Turned Cold (United Kingdom) , Under en kall sol (Sweden)
- Plot:
Guan Jian wants to report the murder of his father who died 10 years ago. The alleged murderer whom Guan Jian accuses of the crime is his own mother.
- IMDB:tt0111424