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Customs authorities in China in eastern Shandong province have seized sixty thousand maps that "incorrectly labeled" the self-ruled island of Taiwan, which Chinese authorities considers part of its sovereign land.

The maps, officials stated, also "failed to include important islands" in the South China Sea, where Beijing's claims clash with those of its neighbors, including the Philippine government and Vietnamese authorities.

The "problematic" maps, destined for overseas markets, cannot be sold because they "compromise national unity, sovereignty and territorial integrity" of the People's Republic of China, officials confirmed.

Maps are a contentious issue for Chinese authorities and its rivals for coral formations, maritime features and rock formations in the disputed maritime region.

Specific Violations

China Customs said that the maps also did not contain the nine-dash boundary, which defines Beijing's claim over almost the whole South China Sea.

The boundary consists of nine dashes which extends numerous nautical miles southeastward from its southern province of Hainan Island.

The seized maps also did not mark the oceanic demarcation between mainland China and Japan, customs representatives stated.

Taiwan Status

Customs representatives explained the maps mislabelled "Taiwan province", without clarifying what exactly the improper identification was.

China considers self-governed Taiwan as its sovereign land and has not ruled out the use of military action to take the island. But Taiwan views itself as separate from the Chinese mainland, with its own constitution and elected leadership.

Geopolitical Tensions

Conflicts in the South China Sea flare up occasionally - most recently over the weekend, when maritime craft from China and the Philippines participated in another confrontation.

Philippine authorities claimed a Chinese ship of intentionally colliding with and using water cannons at a government-owned Philippine craft.

But Chinese officials claimed the confrontation happened after the Philippine ship disregarded multiple alerts and "came too close to" the Chinese vessel.

Historical Precedents

The Philippine government and Vietnamese authorities are also highly vigilant to depictions of the South China Sea in maps.

The popular motion picture from 2023 was prohibited in Vietnam and censored in the Philippine release for depicting a maritime chart with the controversial demarcation.

The statement from customs authorities did not specify where the confiscated materials were destined for sale. The country provides much of the world's goods, from holiday decorations to office supplies.

The interception of "non-compliant cartographic materials" by Chinese customs officers is not uncommon - though the number of the maps intercepted in Shandong easily eclipses earlier interceptions. Merchandise that are non-compliant at the border control are destroyed.

In March, border authorities at an airport in the coastal city seized a shipment of one hundred forty-three nautical charts that included "apparent inaccuracies" in the sovereign limits.

In August, border authorities in the northern province seized a pair of "problematic maps" that, in addition to other issues, featured a "incorrect depiction" of the Tibet's boundaries.