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Why is China allowing tourists to graffiti the Great Wall?
Millions of tourists visit the Great Wall of China every year, but some of those who visit the Unesco World Heritage Site write or carve graffiti on the Wall.
Warning signs forbidding carving and writing have been repeatedly ignored, so officials have established a special graffiti zone at one of the most popular and best preserved areas in the hope that it will protect the ancient monument from further damage.
The Travel Show's Carmen Roberts finds out more.
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