premise: Cheung Tze-keung ((1955--)07 1955 – (1998--)05 1998 ) was a notorious Chinese gangster also known as "Big Spender" (). He was a kidnapper, robber, arms smuggler and was wanted for murder. He was best known for having masterminded the abduction of Walter Kwok and Victor Li, son of Li Ka Shing.
hypothesis: Cheung Tze-keung was born 50 years after a major event happened in China
reason: It is not stated anything about that year. I don't know, I used some words that were similar