Pinglu Canal Nears Opening in Southern China

China has officially announced the navigation zone for the Pinglu Canal, a 134.2-kilometre waterway in the Guangxi Zhuang Autonomous Region, as the landmark project prepares to open for navigation on 16 September. The designation of the country’s first “equivalent Class A navigation area” at the Qinzhou Bay river-sea junction is a key regulatory milestone that allows qualified inland vessels to sail directly from the West River system to the Beibu Gulf deep-water berths — effectively removing the “last mile” barrier between river and sea.

The canal is the first navigable waterway linking river systems to the sea built under national-level planning since the founding of the People’s Republic of China, and a backbone component of the Western Land-Sea New Corridor. The 16 September opening date was confirmed in a photo feature published by Xinhua and carried by regional outlets.

A century-old vision realised

The idea of a sea outlet for China’s Great Southwest dates back to Sun Yat-sen’s 1919 “International Development of China,” which envisioned a navigable link between the region’s inland rivers and the coast. That blueprint, however, remained unrealised for decades.

As Xinhua News reported, construction began on 28 August 2022 under a directive issued by Xi Jinping in December 2023 to “build the Pinglu Canal to high standards and with high quality.” More than 20,000 workers from across ethnic groups took part in the project over its 1,400-day build, which was completed under a model of central coordination, local collaboration, scientific research and industrial linkage.

The canal runs north from the Pingtang River mouth in Hengzhou City, Nanning, follows the Qin River south, and empties into the Beibu Gulf near Qinzhou. It is built to Inland Waterway Class I standard and can accommodate 5,000-tonne vessels. The 65-metre water-level drop along its length is managed by three tiered hubs — Madao, Qishi and Qingnian.

Solving a decades-old bottleneck

Historically, Guangxi and the wider Southwest have sat beside the Beibu Gulf yet lacked a navigable connection between the West River system and the sea. Cargo bound for overseas markets had to be routed more than 500 kilometres eastward to Guangzhou Port.

“The West River and the Beibu Gulf are separated by layer upon layer of mountains — the river and the sea are not connected; though near the sea, it is hard to reach it,” Mo Weihua of the Guangxi Maritime Safety Administration told Xinhua.

According to Li Yuntao, deputy director of investment and development at the Pinglu Canal Group, logistics costs are expected to fall by 18 percent to 30 percent, with long-term savings for areas along the route projected to exceed 5 billion yuan (about $700 million) in freight annually. Su Yonghui, logistics director at the Baise-based aluminium firm Geely Baikuang Group, said water transport would cut his company’s comprehensive logistics costs by 30 percent, saving tens of millions of yuan a year.

The project is also expected to support a new “leaf-vein” seaward industrial layout promoted by Guangxi, in which the Pinglu Canal Economic Belt forms the “main vein” while other regions and parks serve as branches and fine veins. Nanning’s Eastern New City alone reported industrial output of 41.754 billion yuan in 2025, up 29.9 percent year on year, according to the People’s Daily.

A financial analysis published by 21 Finance found that the canal will cut the inland voyage for Southwest cargo by more than 560 kilometres compared with routing through Guangzhou Port. The report identified listed beneficiaries including Beibu Gulf Port, China Communications Construction — which won more than 21.5 billion yuan of contracts — and industrial firms such as Liugong and Sun Paper that expect lower logistics costs.

Engineering firsts

The canal’s technical design has produced several innovations. The Madao hub uses the world’s first three-tier overlapping water-saving lock chambers, achieving water savings of about 60 percent — roughly 1 billion cubic metres per year, equivalent to the storage volume of 70 West Lakes, according to resident engineer Wei Minxin.

The biggest challenge was rapid valve opening and closing. After the team approached an international supplier and was told its design approach was “not for disclosure,” engineers developed their own solution: a pioneering “labyrinth buffer sleeve” hydraulic system that fixes valve closure at 30 seconds. As Cheng Yaofei, chairman of Guangxi Pinglu Canal Construction Co., explained, this allows six 5,000-tonne vessels to pass through the Madao hub within one hour per lock cycle.

Precision has been a hallmark of the build. Tang Huailiang, a metal-structure installation lead with China Water Conservancy and Hydropower Bureau No. 8, said the national standard for the gate closing gap is 0.15 millimetres, but his team achieved 0.05 millimetres — thinner than a sheet of paper. “Our understanding of time is measured in centuries and millennia,” he told Xinhua.

Environmental and economic integration

The canal incorporates extensive ecological measures. A composite fish passage at the Qingnian hub — the first of its kind in China — restores a migration route blocked for more than 60 years since the 1959 Youth Sluice was built. Sonar monitoring recorded 78,474 fish moving upstream and 119,987 downstream, with more than 10 species successfully migrating.

Of the 315 million cubic metres of excavated earth and rock, more than 98 percent is being reused through seven methods including land-raising, green building materials, mine-pit restoration and land reclamation. Thirty-six ancient trees along the route were transplanted under individual plans, and a wildlife overpass and mangrove protection measures were incorporated. A “near-zero-carbon” green energy corridor using solar panels and microgrids is planned for operation.

Hu Yaan, an academician of the Chinese Academy of Engineering, described the project as “not only a new model for ecological protection in major global projects, but also a new benchmark for canal construction quality in the world.”

What’s next

Beyond the waterway itself, the regulatory framework is also taking shape. The river-sea boundary line was officially delineated in April 2026, and vessel certification for the equivalent Class A route has been rolling out since March. Guangxi is also building a smart sensing system and an integrated river-sea dispatch platform.

Analysts see the canal as a catalyst for broader regional integration. Luo Jing, an associate researcher at the Guangxi Academy of Social Sciences, said that once linked with the proposed Xianggui and Zhe-Gan-Yue canals, the waterway network could connect the Yangtze River Economic Belt, the Chengdu-Chongqing Twin-City Economic Circle, the Greater Bay Area and the Beibu Gulf urban cluster — “reshaping the regional economic geography of the South.”

Despite the momentum, questions remain about the pace of commercial adoption, the readiness of supporting port and rail infrastructure, and how quickly the projected cost savings materialise for downstream industries. The first commercial vessels are expected to test those assumptions within days of the opening.