 After retiring from the force, Li joined tycoon Li Ka-shing's Cheung Kong (Holdings) and Hutchison Whampoa in 1995 while he was still on pre-retirement leave to advise the firms on security matters, which sparked controversies and led the Hong Kong government to tighten the Civil Service regulations in seeking employment after retirement.In 1996, Li was involved in the kidnapping incident of Li Ka-shing's son Victor Li Tzar-kuoi, and Walter Kwok Ping-sheung, by notorious gangster Cheung Tze-keung, also known as "Big Spender.