On February 14, 2011, the Zhangs' ages became the subject of controversy. Although her International Skating Union bio lists Zhang Dan as born on October 4, 1985, a Chinese skating association website suggested she was born on that day in 1987. This would mean that during the 2001-02 season she was 14 and too young to compete in senior events such as the Four Continents where they won bronze, as well as the Olympics and World Championships. Her partner's age also came under scrutiny. His ISU bio states that he was born on July 6, 1984 but the Chinese website suggested he was born on February 6, 1982, making him too old to compete in junior events during the 2002-03 season, such as the 2003 World Junior Championships where they won gold. The dates disappeared from the website by February 15. On February 17, the ISU said there were no discrepancies for the Zhangs in terms of the birthdates listed on their passports, ISU registration forms and the Chinese Olympic Committee's website.