"Cold Stream Crossing Snow" is a fanfic of the TV series "Decryption" and follows Han Bing's branch plot in episode 42. The main theme is romance, supplemented by espionage, and the aesthetic ancient style blends with suspenseful espionage. Some plots quote the lyrics of theme songs of film and television dramas ("Lonely Beauty, Don't Admire Yourself", "Drunken Fei Shuang", etc.)
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