[Guest essay] Seoul can’t afford to ignore the restoration of China-North Korea economic ties

North Korean and Chinese officials stand for a photo on the newly opened New Yalu River Bridge connecting North Korea’s Sinuiju and China’s Dandong during an unannounced day trip to China on Oct. 24, 2026. (KCNA/Yonhap)

By Chung Hwan-woo, head of the Sino-Korea Economy/Society Institute

Media attention has recently focused on the opening of the New Yalu River Bridge connecting Dandong, China, and Sinuiju, North Korea, and the visit of the North’s leader Kim Jong-un to Dandong.

The ensuing flood of analyses follows a familiar pattern — “closer ties between North Korea and China,” “North Korean-Russian solidarity” and “diplomatic maneuvers aimed at the US” — all dominated by discourse on foreign policy and security.

While these views do have merit, my years of observing the world of commerce and trade have produced a far different outlook. The true essence of this grand drama is the economy.

A look at trade data from seven or eight years ago shows the astonishing realities hidden behind the scenes. An open secret in the fashion industries of South Korea, China and Japan long before sanctions on the North were imposed was who did the internal stitching for the high-end brand-name coats sold at South Korean department stores.

At the time, the Sino-North Korean border along the Yalu River was a single integrated factory. China supplied the fabrics and accessories while skilled workers in Sinuiju and Pyongyang finished making garments for reshipment to China. The labels might have read “Made in China,” but the added value came from the craftsmanship of North Korean workers, with orders from South Korea and Japan forming the end of this supply chain.

Ground to a halt due to the COVID-19 pandemic and sanctions on Pyongyang, this complex cycle has resumed, this time led by wigs and false eyelashes. Data from China’s General Administration of Customs says both items since 2023 have been the North’s top exports to China, comprising over half of the annual value of such shipments.

Raw materials — in this case, human hair — are shipped from China to North Korea, where workers process them into finished products for reshipment to China. This marks the full restoration of a new type of processing-on-commission model of the division of labor, which exploits loopholes in the United Nations Security Council’s sanctions regime.

The reason that this division of labor is more than a form of “trade through loopholes” is the alignment of the pressing interests of the two countries.

The administration of Chinese President Xi Jinping has long laid the groundwork for border economic cooperation by revising its policies for the innovative development of border trade (i.e., 2021 guidelines on promoting mutual trade between border residents and processing-on-commission activity) and upgrading border ports.

China considers the North an “ace up its sleeve.” With the reshaping of global supply chains, Chinese companies have responded to rising labor costs by moving factories to countries like Vietnam, Pakistan and Bangladesh.

Yet nowhere else on Earth offers China a geographically adjacent workforce with low wages and high productivity. For the economy of Dongei, aka the three northeastern Chinese provinces whose lack of direct access to the sea has meant economic sluggishness, the North’s labor and resources are a “miracle cure” to turn around the region’s economic woes.

To China, North Korea is a trump card that allows it to take care of a pesky problem it faces. But to the North, China is an economic bulwark directly linked to its very survival.

While North Korea’s deepening military ties with Russia might make headlines, China effectively controls the North’s economic arteries, supplying everything from daily necessities and basic industrial materials to the flow of technology and capital.

The opening of the four-lane New Yalu River Bridge instantly removes the logistical bottleneck caused by reliance on the railway tracks of the aging Sino-Korean Friendship Bridge. This is precisely where US economic sanctions on the North are effectively rendered powerless.

In a nutshell, the situation is this: First, the extensive web of sanctions imposed on North Korea by the US and other Western nations has been neutralized through cross-border division of labor and the expansion of land-based infrastructure with China.

Second, stronger economic exchanges between the North and China are not mere displays of friendship between their respective leaderships, but reflect their tangible economic interests, specifically cost reduction and the economic stimulation of northeastern China for Beijing and foreign currency earnings for Pyongyang.

Third, the protracted Sino-US conflict has prompted China to place a higher value on the North’s economic value as a buffer zone.

The problem lies with us. China is South Korea’s largest trading partner and a key supply chain partner. Yet the powerful new system of international division of labor between China and the North, which combines Chinese capital and raw materials with North Korean labor, is taking root right on our doorstep.

What would happen if South Korea were completely excluded from this sweeping reconfiguration of supply chains? Economically, this would mean permanently ceding North Korea, which has potential as a future production base and a domestic supply-linked network, to China.

Diplomatically speaking, this would also rapidly undermine Seoul’s leverage when it comes to Korean Peninsula issues as well. 

This isn’t the time for lofty rhetoric about security — it’s time to face the fact that money and goods are going to flood into North Korea across that new bridge over the Yalu. 

South Korea must soberly assess the economic fallout from the restoration of China-North Korea economic ties and proactively identify new trade opportunities, pursuing a flexible and forward-looking strategy to turn the shifting landscape to its advantage.