Vietnam National Assembly

Vietnam's most strategically sensitive infrastructure project just got larger and more complicated in the same week. Just four days before China Eximbank's chairman flew to Hanoi for financing talks, Vietnam's National Assembly on August 24 raised railway investment to $11 billion — a revised cost estimate of approximately VND 289 trillion, up nearly $3 billion from the $8.3 billion lawmakers authorized in February 2025. Then, on August 27, Chen Huaiyu, the chairman of the Export-Import Bank of China (China Eximbank), sat down with two separate Vietnamese deputy ministers in Hanoi — and disclosed that Beijing's preferred structure for the $6.5 billion loan component is yuan-denominated debt, not US dollars, according to China Eximbank financing talks reported by the Vietnam Investment Review.

That currency proposal — which went largely unreported — is the most consequential detail to emerge from the two meetings. The interest rate Vietnam negotiates matters. Whether the debt is denominated in Chinese yuan (RMB) or US dollars may matter more.

What Vietnam Just Approved — and What Changed

The Lao Cai–Hanoi–Hai Phong railway is a 426-kilometer (265-mile) standard-gauge line running from the Chinese border crossing at Lao Cai and Hekou through the capital Hanoi to the northern port city of Hai Phong. The project also includes 63 kilometers (39 miles) of branch lines serving industrial areas and seaports, bringing total track to 426 kilometers from the 391 kilometers approved in the original 2025 resolution.

The August 24 revision reflects more than cost inflation. Vietnam's National Assembly added a segment from Yen Vien to Gia Lam (approximately 8.4 kilometers, or 5.2 miles), adjusted the alignment through newly restructured provincial boundaries, and Vietnam approved revised cost estimate in line with a Vietnam-China joint statement from April 2026 that called for stronger cross-border rail integration. The resulting system will operate at a maximum of 160 km/h (99 mph) on the main line, 120 km/h (75 mph) through the Hanoi metropolitan area, and 80 km/h (50 mph) on other sections. The main line and the Yen Vien–Gia Lam branch will be electrified; branch lines to seaports will initially run on diesel. The route passes through six provinces and cities: Lao Cai, Phu Tho, Hanoi, Bac Ninh, Hung Yen, and Hai Phong.

The revised cost — VND 289 trillion, or approximately $11.05 billion — breaks down as approximately $4.3 billion in Vietnamese counterpart funding from the country's medium-term public investment plan for 2026 through 2030, and $6.5 billion in Chinese loans from China Eximbank financing talks.

What the August 27 Meetings Actually Revealed

Chen Huaiyu met separately with Deputy Minister of Finance Nguyen Duc Chi at the Ministry of Finance and Deputy Minister of Construction Nguyen Danh Huy at the Ministry of Construction — both on August 27, according to China Eximbank financing talks. The Ministry of Finance meeting produced the more substantive disclosures.

Chen Huaiyu said China Eximbank regards the project as its "highest priority" and committed to accelerating its internal review. He proposed dividing the $6.5 billion loan into two components: a preferential (concessional) loan from China Eximbank directly, and a commercial loan guaranteed by the Vietnamese government through the Ministry of Finance. He further pledged to help Vietnam access syndicated financing from Chinese commercial banks for the commercial tranche.

On currency, Chen Huaiyu proposed denominating both components in RMB rather than US dollars. His stated rationale: lower borrowing costs relative to dollar rates; Vietnam's substantial RMB revenues from bilateral trade with China; and reduced foreign exchange risk given that the railway will source materials and equipment primarily from China. He also raised the possibility that Vietnam could issue Panda Bonds — RMB-denominated bonds sold in China's domestic capital market or in Hong Kong — to help raise a portion of the $4.3 billion in counterpart funds.

Deputy Minister Nguyen Duc Chi told Chen Huaiyu that the Ministry of Finance had "balanced and allocated" the full $4.3 billion counterpart amount within the 2026–2030 public investment plan, and that borrowing from Chinese financial institutions was appropriate "given that the venture would use technology and materials from China." On the RMB proposal, the ministry said it remained "open to these options" while conducting further assessments.

What Yuan Debt Means for Vietnam

A US-dollar loan and an RMB loan carry the same headline interest rate only if the currencies move in tandem — and they don't. Vietnam's dong has generally tracked the dollar more closely than the yuan over the past decade; a shift to yuan-denominated debt would expose Hanoi's repayment obligations to fluctuations in the yuan-dong exchange rate that are partially outside the State Bank of Vietnam's control.

More structurally, RMB-denominated sovereign borrowing would deepen Vietnam's financial integration with China's capital markets in ways that outlast the railway itself. The Panda Bond mechanism — if Vietnam chooses it — would require accessing China's domestic bond market, subjecting Vietnam to Chinese regulatory oversight of the issuance, and creating an ongoing capital markets relationship with Chinese institutional investors. While Chen Huaiyu framed this as a cost advantage, Nguyen Minh Le, an expert on China-Vietnam relations based in California, offered a sharper assessment when the original railway was approved in February 2025: "The project comes with both advantages and disadvantages for Vietnam as the borrower, but the disadvantages are predominant. Vietnam must stay vigilant about sovereignty and autonomy."

Ha Hoang Hop, chair of the Hanoi-based Think Tank Viet Know, told VOA at that time that public skepticism was already fueled by fears of debt traps associated with Chinese loans, and pointed to Vietnam's documented history of project delays, cost overruns, and corruption on large public infrastructure as a compounding risk.

Does Vietnam Already Have a Template for This?

It does, and it is not reassuring. The China Eximbank Cat Linh project — the Cat Linh–Ha Dong metro line (Line 2A) in Hanoi, Vietnam's first urban railway — involved approximately $669.6 million in China Eximbank loans. The project broke ground in October 2011 and was originally scheduled to open by 2013. It opened in November 2021 — eight years late. The total cost grew 57 percent over schedule, from $553 million to $869 million. Debt came due while still inoperable — debt service on the Chinese loans came due in October 2021, a month before the line opened, meaning Vietnam began repaying a non-revenue-generating asset.

The Cat Linh project used a single-contractor EPC (Engineering, Procurement, and Construction) model, with China Railway Sixth Bureau Group holding primary control. Technology transfer to Vietnamese engineers was limited to operations and maintenance, not design or systems architecture.

Vietnam's proposed response for the new railway is a multi-package joint venture model, in which construction contracts are divided into packages and awarded to joint ventures of Vietnamese and Chinese firms. Deputy Minister Nguyen Danh Huy framed this explicitly as a capacity-building mechanism: Vietnamese companies embedded in each package would absorb expertise in construction, operations, and maintenance over time. Chen Huaiyu said China Eximbank endorses this approach and hopes the project becomes "a flagship example of infrastructure cooperation."

Whether the JV model actually delivers technology transfer — or functions as a structural pass-through in which Chinese partners retain effective control — will depend on contract-level terms that have not yet been negotiated and will not be public. Gary Bowerman, director of Check-in Asia, put the general challenge plainly as an analyst on global infrastructure projects when the project was originally approved: "Railway infrastructure projects are hugely expensive, incur numerous land rights and environmental issues and nearly always run over budget and deadline."

Why the Gauge Conversion Matters — and What France Understood About It

The Lao Cai–Hanoi–Hai Phong corridor follows the path of the original Kunming Haiphong railway history, built by France from 1904 to 1910 at a metre gauge of 1,000mm (3 feet, 3 inches). The French chose that narrower gauge in part as a deliberate strategic calculation: a metre-gauge Vietnamese rail network could not be directly used by a Chinese standard-gauge military train. The track itself was an early form of infrastructure sovereignty.

Vietnam's new line will be standard gauge at 1,435mm (4 feet, 8.5 inches) — the same gauge used throughout China's high-speed rail network. Once complete, the track at the Lao Cai–Hekou border crossing will for the first time allow standard-gauge through-trains to operate seamlessly on both sides, eliminating the transfer bottleneck that currently forces passengers and cargo to change vehicles at the border. For manufacturers — Samsung, Foxconn, Pegatron and others who have relocated export-oriented operations to Vietnam's northern provinces partly because of US-China trade tensions — faster and cheaper border-crossing is operationally significant. For Hai Phong, which handles substantial container traffic, direct rail connectivity to the Chinese logistics network closes a gap that has forced reliance on slow road transport.

The dual-use dimension of that connectivity is not hypothetical. Vietnam and China share a contested border history, including a 1979 war in which rail logistics were operationally relevant. Hanoi's government is navigating this project with full awareness of those stakes, even if official statements confine themselves to diplomatic language about a "Vietnam-China Community of Shared Future."

Belt and Road, Two Corridors — and a $67B Line That Runs the Other Way

The Lao Cai–Hanoi–Hai Phong railway is one of two northward Chinese-border rail lines Vietnam plans under the Two Corridors One Belt framework, a connectivity initiative that Vietnam proposed in 2004 and that now overlaps with Beijing's Belt and Road Initiative. The other corridor would connect Dong Dang (on the Lang Son border) to Hanoi. Both projects were identified at the Xi Jinping–To Lam summit in Beijing in August 2024 and reinforced at the April 2026 Vietnam-China Joint Statement.

Running in a completely different direction — south from Hanoi to Ho Chi Minh City — is Vietnam's other infrastructure megaproject: a 1,541-kilometer (958-mile), 350 km/h (217 mph) 67 billion high-speed rail project approved by the National Assembly in November 2024 at an estimated cost of $67 billion, with construction targeted to begin in 2027 and operations in 2035. That project will use different financing — no Chinese state loans — and different technology. Together, the two projects represent a transformation of Vietnam's rail network from the French-colonial metre-gauge system to modern standard-gauge infrastructure on multiple corridors.

The concurrent financing demands of both projects are significant. Vietnam's National Assembly Standing Committee, in reviewing the August 24 cost revision, specifically flagged concern about the Lao Cai railway's impact on the country's total public investment capacity during 2026–2030, a period when multiple nationally significant projects are competing for the same pool of public funds.

What Comes Next — and What Remains Unresolved

Following the August 27 meetings, Chen Huaiyu committed to having China Eximbank's specialist teams develop detailed financing options — covering loan size, tenor, and interest rates for both the preferential and commercial tranches — immediately after returning to Beijing. He said he would personally oversee the project. The bank also proposed connecting Vietnamese authorities with Chinese equipment suppliers, and separately expressed interest in expanding cooperation to green energy and the digital economy.

Vietnam's Ministry of Finance still has significant decisions to make before loan negotiations can advance: whether to accept RMB denomination, whether to explore the Panda Bond mechanism, and how to structure the commercial loan guarantee. Vietnam has committed to providing pre-feasibility and feasibility study reports to China Eximbank to support the bank's internal assessment. A permanent communication channel between the Ministry of Finance's Department of Debt Management and External Finance and a China Eximbank focal point has been proposed.

Construction is still targeted to begin in 2025 (per original authorizing legislation) and reach substantial completion by 2030. Given that no loan agreement has yet been formalized, no technical design contractor has yet been selected, and the total cost was revised upward by nearly $3 billion just four days before the financing talks began, the credibility of that 2030 target is an open question that no official statement has addressed directly.

Originally published on Tech Times