20世纪90年代,知识经济初见端倪。各国(地区)政府为了赢得高科技竞争的优势,绞尽脑汁,迭出花招,千方百计地从海外招揽优秀人才,从而掀起了一场空前的全球性人才争夺战。近些年来,面对美国肆意掠夺各国优秀人才的恶劣趋势,不少发展中国家,甚至部分西方发达国家,纷纷出台各种优惠措施,积极实施“人才回流”策略,以期回收旅居美国的高级 Nineteen ninties, knowledge economy clues. In order to win the advantage of hi-tech competition, governments of all countries (regions) have racked their brains and make concerted efforts to recruit talented people from all over the world so as to set off an unprecedented global battle for talent. In recent years, in the face of the harsh U.S. predatory plunder of talented people from various countries, many developing countries and even some western developed countries have introduced various preferential measures one after another to actively implement the strategy of “brain drain” in order to recycle senior citizens living in the United States