HONG KONG-A 24-year-old Hong Kong-based woman has been named the world’s youngest billionaire, replacing a former Facebook co-founder and spurring gossip in the city.

Perenna Kei, a graduate from the University of London who lives in Hong Kong, was ranked by Forbes as the world’s youngest tycoon in its annual super-rich list, with a net worth of $1.3 billion. “Little-known Perenna Kei, a newcomer to the list, displaces former Facebook co-founder Dustin Moskovitz as the very youngest billionaire,” Forbes said on its website along with the release of the billionaires’ list.

It said her wealth grew along with the listing of a company run by her Chinese tycoon father, Ji Haipeng. “Kei debuts on this year’s Forbes Billionaires List following the Hong Kong listing in December of Logan Property Holdings,” Forbes said, describing her debut as “an unexpected twist”.