"[3] This success within the rickshaw industry attracted the attention of the government and Ngan won the first exclusive licence to operate a bus service in Hong Kong in 1933.
Ngan Shing-kwan's children incorrectly wagered that frugal Hong Kong customers would not pay a premium for air conditioned buses.
Finally, in 1998, despite owning a fleet of more than 800 buses, having 2,400 employees and a turnover of HKD$800 million, the Hong Kong government pulled CMB's licence, citing poor performance.
In addition to his role at China Motor Bus Co. Ltd, he was the first chairman of the Tung Wah Hospital's and the Po Leung Kuk (Society for the Protection of Women and Children).
[5][6] Ngan was also an influential figure within the Chiu Chow Chamber of Commerce since the 1930s and was known to be a devout Christian and trustee of Hop Yat Churches in Kowloon (since 1957), North Point (since 1984) and Ma On Shan (since 1997).