High Quality Content by WIKIPEDIA articles! The Mainland and Hong Kong Closer Economic Partnership Arrangement, or Closer Economic Partnership Arrangement (CEPA) for short, is an economic agreement between the Government of the Hong Kong Special Administrative Region and the Central People`s Government of the People`s Republic of China, signed on 29 June 2003. A similar agreement, known as the Mainland and Macau Closer Economic Partnership Arrangement, was signed between the Government of the Macau Special Administrative Region and the Central People`s Government on 18 October 2003.