In 1956 two young Chinese scientists, Yang Chen-ning and Li Cheng-tao, harbored doubts about the accuracy of this law, but no one was willing to attempt the difficult experiments needed to overturn the law. And so they went to Wu, well known for the accuracy of her work, and asked her to design an experiment that would prove their hypothesis.
一九五六年，二位年輕的中國科學家楊振寧、李政道，懷疑這則定律的正確性，但因實驗太難，沒人願意嘗試，而上門求助於口碑遠傳的吳健雄，請她設計實驗來證明他們的想法。