In August 2007, NDL made a proposal for trilateral cooperation in a digital archiving project between the NLC, NLK and NDL. In October 2008, a meeting of delegations from the three national libraries was held for the first time in Japan to determine directions and a work plan for the cooperation.
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In October 2009, the NLK presented a proposal regarding an Asian digital information portal to the NLC and NDL. Since then, the three libraries continued discussion to formulate an agreement to further trilateral cooperation, including on the occasion of the CJK meeting on the digital library initiative held in Seoul in June 2010.

• The objectives of the China-Japan-Korea Digital Library Initiative are to provide easy integrated access on the Internet to the cultural and scientific heritage of the three countries, to enable people to discover rich multilingual and culturally diverse contents and to contribute to the academic world.
• The three national libraries will promote joint development of solutions for standardization of metadata schema, integration of the information services (portal) and long-term access to digital information. Regarding the portal, development of the interoperability of the portal owned by each library is the aim of the first phase.
• For organization, a Project Committee will be set up, under which the following three working groups will be established: General Group, Technology Group and Resource Group.
• The directors of the three national libraries will hold an annual partners meeting.
• The three national libraries will expand domestic digital collaboration in each country among libraries and other institutions such as museums and archives.