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Chinese customs officers in eastern Shandong province have intercepted sixty thousand maps that "incorrectly labeled" the self-governed island of Taiwan, which Beijing considers part of its territory.

The maps, customs representatives explained, also "failed to include important islands" in the disputed South China Sea waters, where Beijing's claims conflict with those of its neighbors, including the Philippines and Vietnamese authorities.

The "violating" maps, c intended for foreign distribution, cannot be sold because they "compromise national unity, sovereignty and territorial integrity" of China, officials confirmed.

Maps are a contentious issue for China and its regional competitors for coral formations, islands and outcrops in the South China Sea.

Specific Compliance Issues

China Customs said that the maps also did not contain the nine-dash line, which outlines China's territorial assertion over almost the whole South China Sea.

The line comprises nine segments which runs hundreds of miles southeastward from its southern province of Hainan Island.

The seized maps also failed to indicate the maritime boundary between mainland China and Japan, customs representatives stated.

Taiwan Status

Customs representatives explained the maps mislabelled "the Taiwan region", without specifying what exactly the incorrect labeling was.

The Chinese government views self-governed Taiwan as its sovereign land and has kept open the possibility of the use of force to unify with the island. But Taiwan considers itself separate from the Chinese mainland, with its own constitution and democratically-elected leaders.

Geopolitical Disputes

Tensions in the South China Sea periodically escalate - most recently over the weekend, when maritime craft from China and the Philippine government were involved in another confrontation.

Philippine authorities alleged a Chinese vessel of purposefully hitting and using water cannons at a government-owned Philippine craft.

But Beijing claimed the encounter happened after the vessel from the Philippines failed to heed continual notices and "moved perilously near" the Chinese vessel.

Historical Precedents

The Philippines and Vietnamese authorities are also highly vigilant to representations of the disputed maritime region in maps.

The 2023 Barbie film from last year was prohibited in the Vietnamese market and edited in the Philippine release for showing a maritime chart with the nine dash line.

The announcement from China Customs did not indicate where the intercepted items were intended to be sold. The country provides much of the international products, from Christmas lights to stationery.

The seizure of "violating charts" by Chinese customs officers is not uncommon - though the number of the maps seized in the Shandong region easily eclipses earlier interceptions. Goods that are non-compliant at the border control are destroyed.

In spring, border authorities at an airport in Qingdao confiscated a shipment of 143 navigation charts that contained "apparent inaccuracies" in the sovereign limits.

In August, customs officers in Hebei province seized a pair of "non-compliant charts" that, besides other problems, included a "improper representation" of the the Tibet region's limits.