Around 30% of China’s Ming-era Great Wall has disappeared over time as adverse natural conditions and reckless human activities. It is so dilapidated in places that estimates of its total length vary from 9,000 to 21,000 kilometres, depending on whether missing sections are included. Despite its length, it is not, as is sometimes claimed, visible from space. Tourism and local residents’ activities are also damaging the longest human construction in the world. Poor villagers in Lulong county, in the northern province of Hebei, used to knock thick grey bricks from a section of wall in their village to build homes, and slabs engraved with Chinese characters were sold for 30 yuan each by locals. Under Chinese regulations, people who take bricks from the Great Wall can be fined up to ¥5,000, according to the state-run Global Times, but there is no specific organization to enforce the rules.

In my group, we talked about world heritage site. There are 1031 world heritage site. Then, do you agree or disagree to set up world heritage site? The value of name is big. If I travel abroad, I want to go world heritage site, for example Acropolis (Greece), Great Barrier Reef (Australia), Machu Picchu (Peru).  So I agree to set up world heritage site、and we should make an effort to protect them.