SCMP: US racist attitudes towards Chinese Americans, no future for Chinese scientists in America. Mathematician Zhang Yitang, who joined Sun Yat-sen University in Guangzhou from California in June, has called the wave of Chinese researchers exiting the US a “positive trend”. 《南華早報》：美國對華裔美國人的種族主義態度，華裔科學家在美國沒有未來。今年六月從加州加入廣州中山大學的數學家張益唐稱，中國研究人員離開美國的浪潮是一個「正面趨勢」.
https://www.scmp.com/news/china/science/article/3322381/mathematician-zhang-yitang-says-he-left-us-china-due-political-climate?