He died from a rare cardiovascular disease when Li was fourteen.
Her mother didn't tell Li Na that her father had died for many weeks, thinking it would affect her game.
She turned professional in 1999 at the age of sixteen.
Li turned professional in 1999, and won three of the first four singles tournaments she entered on the ITF Circuit, two at Shenzhen and one at Westende, Belgium.
She also won all of her first seven ITF doubles tournaments she entered.
In 2000, she won 52 singles matches on the ITF circuit, more than any other player, notching another eight tournament titles, including one at the $50,000 level, two at $25,000, and a run of four $10,000 tournament wins in March and April.
Li Na (born 26 February 1982) is a Chinese former professional tennis player, who achieved a career-high ranking of world No. Over the course of her career, Li won nine WTA singles titles, including two Grand Slam singles titles at the 2011 French Open and 2014 Australian Open.
Li's rise to prominence came after those victories, which made her the first and only Grand Slam singles champion from East Asia and Asia as a whole.