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Chinese customs officers in the coastal province of Shandong have intercepted sixty thousand maps that "improperly identified" the self-ruled island of Taiwan, which Chinese authorities considers part of its sovereign land.

The maps, customs representatives explained, also "omitted important islands" in the disputed South China Sea waters, where Beijing's claims clash with those of its neighbors, including the Philippine government and Vietnam.

The "problematic" maps, c intended for foreign distribution, cannot be sold because they "compromise national unity, sovereignty and territorial integrity" of China, customs representatives stated.

Cartographic materials are a sensitive topic for China and its regional competitors for coral formations, maritime features and rock formations in the South China Sea.

Detailed Violations

Customs authorities stated that the maps also did not contain the nine-dash boundary, which demarcates China's territorial assertion over nearly the entire South China Sea.

The demarcation includes nine dashes which extends a significant distance south and east from its most southerly province of Hainan Island.

The confiscated materials also did not mark the maritime boundary between China and the Japanese archipelago, authorities said.

Taiwan Status

Customs representatives explained the maps mislabelled "the Taiwan region", without clarifying what exactly the mislabelling was.

China considers self-ruled Taiwan as its territory and has not ruled out the use of force to unify with the island. But Taiwan views itself as different from the Chinese mainland, with its own governing document and elected leadership.

Geopolitical Tensions

Disputes in the disputed maritime region flare up occasionally - just recently over the weekend, when maritime craft from China and the Philippines participated in another confrontation.

Manila claimed a Chinese vessel of deliberately ramming and firing its water cannon at a Philippine government vessel.

But Chinese officials stated the incident happened after the vessel from the Philippines ignored repeated warnings and "came too close to" the Chinese vessel.

Historical Similar Cases

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

The 2023 Barbie film from 2023 was prohibited in the Vietnamese market and modified in the Philippine release for displaying a South China Sea map with the nine dash line.

The statement from China Customs did not indicate where the confiscated materials were planned for distribution. China provides much of the world's goods, from Christmas lights to office supplies.

The seizure of "violating charts" by China's border authorities is frequently occurring - though the amount of the maps confiscated in Shandong easily eclipses earlier interceptions. Merchandise that are non-compliant at the border control are destroyed.

In March, customs officers at an air transportation hub in Qingdao intercepted a batch of one hundred forty-three marine maps that featured "apparent inaccuracies" in the territorial boundaries.

In late summer, border authorities in the northern province seized a pair of "violating cartographic materials" that, besides other problems, contained a "incorrect depiction" of the Tibetan border.