Number 9: Richard Li, Hong Kong: Net worth: $1.4 billion
Youngest son of Hong Kong's richest man, Li Ka-shing. Li borrowed money from his father and managed to amass his own 10-figure fortune. To find out more about him, click on his personal Web site at richardli.com, which details Li's business successes as well as his interests, which include diving and flying. (Image courtesy: Reuters)