The retrieval field of China HowNet is the level of literature retrieval, such as library book retrieval, which can be searched individually or in combination by title, author and publishing house.

HowNet, the concept of national knowledge infrastructure, was put forward by the World Bank in 1998. CNKI project is an information construction project aimed at realizing the dissemination, enjoyment and value-added utilization of knowledge resources in the whole society. Initiated by Tsinghua University and Tsinghua Tongfang, it was established in June 1999.

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