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Chinese customs officers in eastern Shandong province have confiscated sixty thousand maps that "mislabelled" the self-ruled island of Taiwan, which Beijing claims as part of its sovereign land.

The maps, customs representatives explained, also "left out important islands" in the disputed South China Sea waters, where China's territorial assertions clash with those of its regional neighbors, including the Philippine government and Vietnamese authorities.

The "problematic" maps, meant for export, cannot be sold because they "compromise national unity, sovereignty and territorial integrity" of China, authorities said.

Cartographic materials are a sensitive topic for Chinese authorities and its rivals for coral formations, maritime features and rock formations in the disputed maritime region.

Specific Violations

Customs authorities said that the maps also omitted the nine-segment line, which demarcates Beijing's claim over nearly the entire South China Sea.

The line comprises nine segments which stretches hundreds of miles south and east from its most southerly province of Hainan.

The seized maps also omitted the maritime boundary between China and the Japanese archipelago, officials confirmed.

Cross-Strait Situation

Officials stated the maps mislabelled "the Taiwan region", without specifying what exactly the improper identification was.

The Chinese government considers self-governed Taiwan as its sovereign land and has not ruled out the use of military action to unify with the island. But Taiwan considers itself different from the mainland China, with its own constitution and popularly chosen officials.

Regional Disputes

Tensions in the disputed maritime region periodically escalate - most recently over the weekend, when ships from China and the Philippines participated in another incident.

Manila claimed a Chinese ship of purposefully hitting and using water cannons at a government-owned Philippine craft.

But Beijing stated the confrontation happened after the Philippine vessel disregarded multiple alerts and "came too close to" the China's maritime craft.

Historical Similar Cases

The Philippines and Vietnam are also especially concerned to depictions of the South China Sea in cartographic materials.

The 2023 Barbie film from 2023 was banned in Vietnam and edited in the Philippine release for displaying a maritime chart with the nine dash line.

The statement from China Customs did not specify where the intercepted items were planned for distribution. The country produces much of the global merchandise, from Christmas lights to stationery.

The seizure of "problematic maps" by customs officials is frequently occurring - though the quantity of the maps confiscated in the Shandong region easily eclipses previous confiscations. Products that fail inspection at the border control are destroyed.

In March, border authorities at an air transportation hub in Qingdao intercepted a batch of 143 nautical charts that contained "obvious errors" in the territorial boundaries.

In August, border authorities in Hebei province intercepted two "violating cartographic materials" that, among other things, contained a "misdrawing" of the Tibet's boundaries.