The Asian Infrastructure Investment Bank (AIIB) is a multilateral development bank and international financial institution that aims to collectively improve economic and social outcomes in Asia. It is the world's second largest multi-lateral development institution. Headquartered in Beijing, China, the bank currently has 109 members, including 14 prospective members from around the world. The breakdown of the 109 members by continents are as follows: 42 in Asia, 26 in Europe, 22 in Africa, 9 in Oceania, 8 in South America, and 2 in North America. The bank started operation after the agreement entered into force on 25 December 2015, after ratifications were received from 10 member states holding a total number of 50% of the initial subscriptions of the Authorized Capital Stock.

Beijing, alternatively romanized as Peking, is the capital of China. With more than 22 million residents, Beijing is the world's most populous national capital city as well as China's second largest city after Shanghai. It is located in Northern China, and is governed as a municipality under the direct administration of the State Council with 16 urban, suburban, and rural districts. Beijing is mostly surrounded by Hebei Province with the exception of neighboring Tianjin to the southeast; together, the three divisions form the Jingjinji megalopolis and the national capital region of China.