Dan represented her nation at international competitions. She competed at the 2005 World Single Distance Speed Skating Championships in the 1000 metres event (23rd) and at the 2005 World Sprint Speed Skating Championships (24th). She won the gold medal at the 2007 Asian Speed Skating Championships in the 500 metres event. She also competed at other international competitions, including at ISU Speed Skating World Cups and at the 2007 Winter Universiade.