After 13 years, the national-level Great Wall comprehensive conservation plan was released jointly by the Ministry of Culture and Tourism and the State Administration of Cultural Heritage on Tuesday. /VCG Photo

According to the plan, sections of the Great Wall built during the Qin (221 B.C. to 206 B.C.), Han (202 B.C. to 220 A.D.) and Ming (1368 A.D. to 1644 A.D.) dynasties were the key areas to be conserved. /VCG Photo

China has over 43,000 sites of the Great Wall and relevant resource relics, including more than 10,000 wall sections, 1,700 trench and moat sections, 29,000 architectural items, as well as 2,200 passes and fortresses. /VCG Photo

About 100 million yuan (14.7 million U.S. dollars) has been allocated annually to protect the Great Wall in recent years, and there are over 3,000 patrols registered for Great Wall protection nationwide, according to the National Cultural Heritage Administration. /VCG Photo