Liu continued her success on youth level by taking Gold in the Singles, Doubles and Mixed competition at the
1998 European Youth Championships in
Norcia. In 1999, she again claimed the singles and mixed titles in
Frydek-Mistek. She competed at the
2000 Sydney Olympics, the
2004 Olympics in Athens and the
2008 Beijing Olympics, reaching the third round of the
singles competition in each of them. She also competed in the
team competition in Beijing. In May 2011, she qualified for her fourth Olympic attendance in the
2012 London Olympics where she was knocked out in the third round. She competed at the
2016 Summer Olympics in Rio de Janeiro. She was defeated in the fourth round by
Feng Tianwei of Singapore. She also competed in the
women's team event, but the Austrian team was defeated by Japan in the quarterfinals. Liu was the flag bearer for Austria during the
Parade of Nations. In the
2020 Summer Olympics, Liu defeated 12-year-old Syrian
Hend Zaza in the preliminary round of the
Women's Singles, with a score of 11:4, 11:9, 11:3, 11:5. Zaza was the youngest competitor in the games, the youngest table tennis player to compete in any Olympics, and the first Syrian table tennis player to qualify for the Olympics. In the first round Liu defeated Ukrainian
Hanna Haponova. ==Results==