To specify "all the tea in China", one has to know what constitutes the borders of China.

BBC: China seizes 60,000 maps over 'mislabelled' Taiwan

Chinese customs officers in eastern Shandong province have seized 60,000 maps that "mislabeled" the self-governed island of Taiwan, which Beijing claims as part of its territory.

The maps, authorities said, also "omitted important islands" in the South China Sea, where Beijing's claims overlap with those of its neighbors, including the Philippines and Vietnam.

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

Maps are a sensitive topic for China and its rivals for reefs, islands and outcrops in the South China Sea.

China Customs said that the maps also did not contain the nine-dash line, which demarcates Beijing's claim over nearly the entire South China Sea.

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

The seized maps also did not mark the maritime boundary between China and Japan, authorities said.

Authorities said the maps mislabeled "Taiwan province", without specifying what exactly the mislabeling was.

Jeff