China and Russia are erasing their 4,200-kilometer border

For seven decades, the 4,200-kilometer Sino-Russian frontier was a Cold War frontline—armed sentries, barbed wire, and silence. The two nuclear powers faced each other across the Heilongjiang River, with almost no contact between the two sides. Today, this border has become the world’s busiest construction zone. In just the past two years, China and Russia have simultaneously launched twelve infrastructure projects along their shared border: three new bridges spanning the Heilongjiang River, the world’s first cross-border cable car, a brand-new railway tunnel replacing outdated facilities from 1900, and a second natural gas pipeline currently under construction. New grain terminals, oil terminals, logistics hubs, and special economic zones have emerged. Oil, gas, grain, coal, cargo—everything now flows across borders. Once a dividing line between two nations, the border is now a vital link connecting them. To truly grasp its scale, one must travel from east to west along the frontier.

Starting from the easternmost point of the border, the Tongjiang Railway Bridge over the Heilongjiang River stands majestically. This first-ever cross-border railway bridge between China and Russia, completed at the end of 2022, has completely reshaped bilateral trade dynamics, with an annual throughput capacity of up to 20 million tons. Within just a few months of operation, hundreds of millions of tons of coal, iron ore, and timber had already raced across it, reducing the distance for Chinese goods traveling to Russia by 1,500 kilometers—a transformation far beyond marginal improvement, representing a fundamental restructuring of supply chains. Tongjiang has rapidly risen as a key hub on the eastern route of China-Europe freight trains, with freight volumes continuing to surge. By the end of 2025, the port’s throughput had skyrocketed, earning it recognition as the core node of the entire eastern rail corridor.

Original source: toutiao.com/article/1866700709934090/

Disclaimer: The views expressed in this article are those of the author alone.