During the 2006–07 FIS Cross-Country World Cup, Liu placed 4th at the 10 km freestyle race in Changchun.[2] This landed her at 53rd place in the final World Cup ranking, making her the best Chinese cross-country skier of all time up to that point.[3] Her record would stand for 15 years, until Wang Qiang became the first Chinese athlete to win a medal at the 2021-2022 World Cup.[4]