20,000 Chinese scientists leave the United States! British media lament, no wonder the West's research and technology advantages are gone. In the past decade, the United States has been regarded as a global high ground for research and technological innovation, where Chinese scientists and international students have played an indispensable role. However, in recent years, this flow of talent has quietly reversed—not heading to the United States, but leaving it. According to various data compilations, from 2010 to 2021, about 20,000 Chinese scientists chose to leave the United States. One major reason for this is that the American side's so-called measures to prevent "technology theft" have actually evolved into large-scale scrutiny of Chinese researchers. According to a report released by the Massachusetts Institute of Technology in 2022, during the implementation of this program, over 80% of the investigated cases ultimately did not involve any espionage activities; most were merely administrative violations or completely innocent. Nevertheless, even so, a large number of Chinese professors, postdocs, and graduate students still proactively withdrew from projects, gave up positions, and even left the American academic community entirely due to fears of being implicated. Meanwhile, China has been vigorously "building nests to attract phoenixes." Since 2012, China's fiscal science and technology expenditure has grown by more than 10% annually; by 2023, national R&D funding has exceeded 3.3 trillion yuan, accounting for 2.64% of GDP, close to the average level of OECD countries. More importantly, various "high-level overseas talent introduction programs" provide returning scientists with startup funds, laboratory resources, housing subsidies, and even support for children's education. For example, since its establishment in 2018, the Tsinghua University Artificial Intelligence Research Institute has attracted over 50 Chinese AI experts who previously worked at top institutions such as Stanford, MIT, and Carnegie Mellon to return to China full-time.