China rules tighten scrutiny of outbound deals via Hong Kong

Law adds national security reviews for technology-heavy transactions.

China's outbound investment rules are reducing Hong Kong's appeal as a route for moving mainland capital, technology, and data overseas by subjecting more transactions to security reviews and disclosure requirements, lawyers said.

The regulations weaken Hong Kong's role in structures used to move private wealth and corporate assets offshore with less scrutiny, Joanne Du, a partner at Mayer Brown LLP, told Hong Kong Business.

"The specific 'white glove' advantage it offered for less transparent structures is being materially undermined under the new security review regime," she said in an emailed reply to questions.

China's Regulations on Outbound Investment, which took effect on 1 July, establish approval and filing requirements for mainland Chinese residents making outbound investments and introduce a national security review system. The rules also increase scrutiny of technology-intensive transactions.

Du said the regime targets layered structures involving individual investors that previously made Hong Kong attractive as a lower-scrutiny route for moving assets offshore.

"The new regulation closes a prior gap on the outbound flight of sensitive tech, data, [and] assets," she said.

Du said the rules target so-called "offshore washing" arrangements, in which mainland Chinese technology, intellectual property, or data is transferred into holding companies incorporated in jurisdictions such as the Cayman Islands or Singapore before being sold through offshore transactions.

The regulations track where technology was developed and transferred regardless of where a holding company is incorporated, she said. They also tighten scrutiny of indirect transfers through overseas personnel deployment and training arrangements.

Despite the changes, lawyers said Hong Kong is likely to remain the main gateway for mainland Chinese companies pursuing overseas deals.

Shi Chuan, a partner of corporate and commercial and co-head of the China Practice Group at Tanner De Witt Ltd., said the rules prevent offshore structures from being used to bypass export-control, data-security, and technology-transfer requirements.

Like Du, Shi said Hong Kong would remain the preferred route for mainland Chinese companies and investors accessing overseas markets. However, deals will need to be assessed against mainland Chinese regulatory requirements earlier in the transaction process, he added.

Shi said investors now need to assess whether proposed transactions involve sensitive technologies, data, personnel, financing arrangements, assets, or national security issues.

Lawyers reported limited disruption since the rules took effect, although uncertainty over the scope of several provisions is affecting deal planning.

Jay Ze, a partner and head of international strategy for Greater China at Stephenson Harwood LLP, said some transactions nearing signing accelerated before the regulations took effect.

Some deals are also being restructured, particularly those involving semiconductors, artificial intelligence, advanced materials, biotechnology, and large datasets, he said.

Companies are testing whether investments could be structured as minority stakes rather than acquisitions, or as licensing arrangements instead of purchases, he added.

"The dominant client concern is unpredictability,” Ze said in an emailed reply to questions. “The sensitive-sectors list is drawn in policy language rather than statutory precision, and clients do not yet have a bank of published decisions to calibrate against.”

Neither Shi nor Du said they had seen transactions paused because of the rules.
Shi said parties involved in transactions already under negotiation are reviewing deal structures, regulatory conditions, completion timelines, and representations to ensure compliance.

‘Flying blind’
Clients are also assessing whether the framework would lengthen transaction timelines or trigger more approval and filing requirements, he said.

Several key terms remain undefined, lawyers said.

"Clients will be flying blind for the first 12 to 24 months," Ze said, adding that broad definitions covering national security, critical technology, and critical data give regulators significant discretion.

Ze said investors also need clarity on what authorities would include in a sensitive-sector catalogue and how critical technology and critical data would be interpreted.

He also questioned how authorities would assess Chinese investors' exposure through limited partnerships and how Hong Kong- and Macau-incorporated entities controlled by mainland Chinese investors would be treated under the rules.

Shi said further guidance is needed on the scope and procedures of the national security review mechanism.

"The scope of the national security review system remains broad, and detailed implementing rules have not yet been issued," Shi said. "As a result, there is a degree of uncertainty and unpredictability as to how the security review system will be applied in practice."

Shi said authorities should clarify review thresholds, timelines, and the consequences of adverse decisions. He also called for guidance on how the rules apply to mainland Chinese residents, offshore holding structures, employee incentive arrangements, indirect transfers of technology or data, and transactions already under way before the regulations took effect.

Du said the rules would increase compliance costs and administrative work for companies.

She noted that companies must evaluate export controls, technology-export licensing requirements, cross-border data-transfer rules, personal information protection requirements, cybersecurity obligations, and national security reviews together rather than separately, she said.

They must also monitor compliance throughout the life of an investment rather than only at entry, she added.

Du said companies were concerned that activities such as technology licensing, overseas research centres, and sending employees to work abroad temporarily could face national security scrutiny.

Lawyers also said the rules add complexity to cross-border transactions spanning multiple jurisdictions.

A single transaction may now face mainland Chinese security reviews, foreign investment screening, export controls, and disclosure requirements for listed companies, Ze said.

As a result, deal timelines and cost assumptions must be reassessed to account for multiple regulatory approvals, he said.

"The clients who will navigate this well are the ones who front-load the regulatory architecture at deal origination rather than treating it as a signing-to-closing workstream," Ze said.