World number 15 Zheng Jie became the highest ranked Chinese player of all time this week but hopes it is just the start of an even more successful phase of her career.
The 25-year-old, a surprise semi-finalist at Wimbledon last year, surpassed the national record of Li Na -- world number 16 in January 2007 -- when the women's world rankings were released on Monday.
"You will never be a great player without ambition," she told the China Daily newspaper. "The record is not only a surprise to others, but has also provided a new challenge for me. It will be a brand new start."
