After training professionally for two years, Zhu was selected to be on the Chinese Junior National team in 2010. She participated in 2011 FIVB Volleyball Girls' U18 World Championship and won a silver medal with the team. In 2012, she entered the U20 team and won the 2012 Asian Junior Women's Volleyball Championship championship. She was also awarded MVP for the first time. In 2013, she continued to represent China's U20 national team and attended the 2013 FIVB Volleyball Women's U20 World Championship, helping the team win the championship. Continuing her high-level play, she was eventually awarded the MVP, Best Scorer, and Best Spiker of the tournament.