杨振宁第一次回中国时拜访了老同学、两弹元勋邓稼先。在杨离开中国的那天,邓告诉他中国两弹的制造全靠自己,没有任何外国人参与。杨说他当时听了激动得不能自已,躲到洗手间去流泪。这事大概很多人知道。 Yang Zhenning visited the old classmate for the first time in China, with two bouncing-heads, Deng Jiaxian. On the day Yang left China, Deng told him that the two Chinese bombs were manufactured on their own and without any involvement of foreigners. Yang said he was not excited when he heard it, hid in the bathroom to tears. This matter probably many people know.