Two years ago, the US led China in AI by a country mile.
Today the gap is under three points, and Beijing has decided the best way to keep what it has built is to stop the people who built it from getting on a plane.
Senior AI researchers at private Chinese firms, including Alibaba and DeepSeek, are being told to give their passports to their employers.
The rule started inside DeepSeek in March, right after its R1 model surprised the world by matching top US benchmarks with far less compute - and now the same playbook is rolling out across a much wider group.
The official reason is that researchers' work could expose state or commercial secrets, but in practice it is an exit ban without a court order.
It applies whether the policy comes from a company HR memo or a quiet word with the government.
The Communist Party has classified frontier AI as a strategic national asset, and that label is doing a lot of work here.
This is the kind of move that reshapes the AI race, and we cover it every weekday in Market Briefs - delivered in five minutes, with a free investing masterclass for new readers.
The travel rules are one piece of a wider closing of the gates. In late April, China's National Development and Reform Commission told leading AI firms - including Moonshot AI, StepFun, and ByteDance - to reject US-origin money in new fundraising rounds unless they get clearance first.
Some Chinese AI startups, including Moonshot, are looking at moving their legal home from offshore back to the mainland - a shift that follows Beijing's block of Meta's $2 billion attempt to buy Manus and its signal that offshore-incorporated firms will have a tougher time getting domestic IPO approval.
China now files about 69.7% of global AI patents and produces 23.2% of AI research papers, while installing industrial robots at nine times the US rate.
AI talent moving to the US has fallen 89% since 2017.
A travel rule that worked on a few dozen DeepSeek staff is much harder to enforce on thousands of researchers across AI companies like Alibaba and ByteDance, so enforcement will be the real story over the coming months.
For investors watching US chipmakers and cloud names, this is one more sign that the AI race is splitting into two pools of talent, capital, and IP that will not mix.
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