- the 10-division army system
- The 11th Asian Games
- The 11th G20 Summit（Hangzhou）
- the 12 divisions of the Mahayana canon
- The "12th Five-Year" Development Plan for the Energy Saving and Environmental Protection Industry
- The "12th Five-Year" Plan for Municipal Domestic Waste Harmless Treatment Facilities Construction
- The "12th Five-Year" Plan For Municipal Sewage Treatment and Recycling Facilities Construction
- The "12th Five-Year" Plan for the Energy Conservation and Emission
- the "12th Five-Year" Plan for Waste Recycling Technology
- the 13 famous actors of Jingqiang opera
- the 13th August 2010 catastrophic debris flows in sichuan province
- The 13th International Symposium on the Genetics of Industrial Microorganisms
- The 14th AIMAC Conference
- The 15th General Assembly of ICOMOS
- The 18 Decrees of the State of Qin
- the 18-room metropolitan examination scoring system
- The 1905 French Law on the Separation of the Churches and State
- The 1911 Revolution Museum
- The 2009 UNESCO Framework for Cultural Statistics
- The 20th Century Grand Stage
- the 21st Century Seminar on Development of Native Opera Genres of China
- the 24 solar terms
- The 24th Winter Olympic Games
- The 28th World Heritage Committee Session (Suzhou)
- The 29th Summer Olympic Games