Zhu Yuling won only one Korean Open on 20 18. The World Cup final was swept by Ding Ning 4-0, and the Swedish final was defeated by Ito Meicheng 4-0. Her fragile psychological quality, lack of morale, embarrassment at critical moments and poor performance in foreign wars are all the reasons for her failure. In contrast, Liu's condition has recovered, and he has experience, so it is understandable to be selected.