Lam was selected by a pro-Beijing committee, as were her predecessors, and is already being cast by critics as a China stooge in a city where many are angry at Beijing's tightening grip on the freedoms of nearly eight million people.
She took her oath of office under China's national flag at the city's harbourfront convention centre, before shaking hands with Xi.
The Sino-British Joint Declaration gave Hong Kong rights unseen on the mainland through a semi-autonomous "one country, two systems" agreement, lasting 50 years.
There are growing fears that those freedoms are now under threat from an assertive Beijing, with Chinese authorities accused of interfering in a range of areas in Hong Kong, from politics to media and education.
Pro-China protesters targeted a small march by activists in memory of the victims of Beijing's 1989 Tiananmen Square crackdown this morning as officials gathered for the swearing in.
Flag-waving pro-China protesters then blocked the march as police struggled to separate the two sides.
Democracy campaigners were taken away in police vans and released soon after.
Lam's swearing in by Xi is deeply symbolic for frustrated activists who have been pushing for fully free leadership elections for the city, with mass pro-democracy "Umbrella Movement" rallies bringing parts of the city to a standstill in 2014.
Those protests were sparked by a Beijing-backed political reform package which said Hong Kong could have a public vote for leader, but that candidates must be vetted first.
Lam has made no commitment to revisit it soon.
The failure of the democracy movement to win concessions has led some young campaigners to call for self-determination or even independence for the mainland, which has infuriated Beijing.
Disclaimer: No Business Standard Journalist was involved in creation of this content
You’ve reached your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Exclusive premium stories online
Over 30 premium stories daily, handpicked by our editors


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app
