[4] As of 2008, Kwong effectively controls about 41.53% of SHK Properties' shares through a family trust, so she was deemed as the largest shareholder of the company, with a net worth of 12.1 billion dollars as of July 2020.

[5][6] Kwong is the widow of Kwok Tak-seng, the founder of Sun Hung Kai Properties, and the mother of Walter, Thomas and Raymond, directors of the company.

She moved from mainland China to British Hong Kong in 1947,[1] on the eve of the Second Chinese Civil War.

According to the South China Morning Post, prior to her 2008 appointment as chairperson, she "had never sat on the board of a Hong Kong company".

[1] On 27 May 2008, Kwong replaced her son Walter when he was ousted as chairperson of the company;[1][5] she stepped down from the position in late 2011.