He joined the Hong Kong Government as an Administrative Officer from 65438 to 0977, and worked in many major policy areas, such as security, buildings and lands, education, manpower planning and transportation.
1994 and 1995 are government spokespersons for the office of the chief secretary.
1995 to 1997 Deputy Director of Ren Baoan Bureau, responsible for security and military handover during the handover of sovereignty.
From 1997 to 2000, Ms. You was appointed as the administrative director.
From 2000 to 2002, he was re-appointed as the Secretary for Information Technology and Broadcasting, and was the youngest Secretary and Policy Bureau Director at that time.
From July 2002 to April 2006, he served as the only permanent secretary of the Health, Welfare and Food Bureau. At that time, it was one of the largest policy bureaux of the Hong Kong Special Administrative Region Government.
From May 2006 to June 2007, Carrie Yau was appointed as the Permanent Secretary of the Health, Welfare and Food Bureau (Food and Environmental Hygiene). During this period, the Centre for Food Safety was established to strengthen food monitoring, risk assessment and overall supervision mechanism. The center is now an important institution to supervise food safety.
Since July 2007, he has been appointed as the Permanent Secretary of the Home Affairs Bureau, responsible for the development of the West Kowloon Cultural District and the equestrian events of the 2008 Beijing Olympic Games. Other policy areas include youth development, civic education and national education promotion, culture and arts, recreation and sports, social enterprises, local administrative development, community building, religion, entertainment licensing, legal aid, building management and gambling.
You Zengjiali was responsible for coordinating the visits of foreign heads of state and politicians to Hong Kong and organizing important international activities (such as ITU Telecom Asia 2000, 200 1 Global Women's Summit, etc.).
In 2004-2005, Carrie Yau was the chairman of the Hong Kong Association of Administrative Officers, and in 2007, she was the first chairman of the Alumni Association of the Peking University National Seminar.