There are 7,000 watch towers, block houses for soldiers and beacons to send smoke signals | This measure is particularly preferred for comparing GDP per capita levels in different countries |
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Construction and rebuilding of the Great Wall [ ] Builders used materials that were nearby | Wade, Geoff, "", Sino-Platonic Papers, No |
The wall is basically made up of a large group of solid stone and clay, with a width of 6 m in most of its regions.
14The most important monuments are the Great Wall of China, Victoria Harbor, Potala Palace and the Forbidden City | Retrieved on 4 March 2010 |
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Denis Crispin Twitchett, Michael Loewe, John King Fairbank, The Ch'in and Han Empires 221 B | E-commerce avec la Chine : Mode d'emploi pour les PME-TPE |
This building enabled them to protect their property from the attacks of the Turks and Mongols.
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