The Sun Yee On "Small B" group used trust companies to launder nearly 40 billion Hong Kong dollars, setting a record for the highest case in history.

The police launched a large-scale anti-gang operation codenamed "Ambush Arrow," arresting 82 people, including the mastermind "Thin B" of the Sun Yee On triad, core members, and their families. Investigations revealed that over the past 21 months, a licensed trust service company was used to deposit