Why did China block Meta's acquisition of AI startup Manus?

China has blocked Meta's acquisition of AI startup Manus, a deal the Facebook parent had already declared complete in a move that signals Beijing is willing to treat artificial intelligence talent and technology as a hard national security line, regardless of where the company is formally headquartered.

The announcement came on Monday by the National Development and Reform Commission of China, just a month before the meeting scheduled between US President Donald Trump and Chinese President Xi Jinping.

Why did China block Manus?

Meta announced the acquisition of Manus in December, positioning it as a rare case of a major US tech group buying an AI company with deep Chinese roots. Manus, formally operated by Singapore-registered Butterfly Effect Pte, builds a "general-purpose" AI agent capable of completing complex, multi-step tasks autonomously.

Meta had argued the deal was clean: there would be no continuing Chinese ownership interests in Manus, and the startup would shut down its China operations entirely.

Beijing was not convinced. China's commerce ministry had flagged the deal in January, citing concerns over technology exports, data transfers and cross-border acquisitions. On Monday, the NDRC's Office of the Working Mechanism for Security Review of Foreign Investment issued a single-line statement prohibiting the acquisition and ordering all parties to withdraw.

It gave no further explanation. As of Monday, Manus's own website still described the company as "now part of Meta".

Timing is difficult to overlook. The ban comes just weeks ahead of a planned Trump-Xi meeting, and according to experts, the timing was intentional. "This is China’s way of telling the world that the nation is ready to engage in aggressive play when it comes to the talent and skills of AI, which they regard as key for their national security," explained Lian Jye Su, Omdia's chief analyst.

Su drew a direct parallel to Washington's own toolkit. "In the context of rivalry, it mirrors US export controls, entity lists, and investment curbs on China," he said.

The implication is that Beijing now has and is prepared to use an equivalent set of levers to block the flow of AI capability in the other direction.

Manus traces its roots to Beijing-registered entities established several years before the company relocated and rebranded in Singapore. That structure Chinese-origin founders, Singapore domicile, was likely designed to sit outside Beijing's regulatory reach.

Monday's decision suggests that calculation no longer holds. "Beijing's acquisition ban could deter similar acquisition plans by US tech giants going forward," Su said.

Meta said the Manus transaction "complied fully with applicable law" and that it anticipates "an appropriate resolution". Whether that resolution is diplomatic or legal, and whether it arrives before or after the Trump-Xi meeting, will be closely watched by every US tech company that has quietly been eyeing AI talent with Chinese origins.