1980, joined the Administrative Service of the Hong Kong Government; 2006, reached rank of Administrative Officer Staff Grade A1; 2007, Principal Official when appointed Secretary for Development; 2012, appointed Chief Secretary for Administration. Has served the public for more than 36 years in 20 public service positions, including Director of Social Welfare, Permanent Secretary for Housing, Planning and Lands (Planning and Lands), Director-General of the Hong Kong Economic and Trade Office in London, Permanent Secretary for Home Affairs, Secretary for Development and Chief Secretary for Administration. March 2017, elected as the Fifth-Term Chief Executive of the Hong Kong Special Administrative Region, officially appointed to this position by the Central People’s Government on 31 March 2017 to assume office on 1 July 2017.