October 9, 2018, the President of the Elling Eide Center in the U.S., Mr. Harold G. Mitchell, and his wife, came to visit Director-General Tseng and discuss about a wide range of possible future collaboration. Elling Eide Center is one of the largest and well-known private sinology libraries in the world. It signed a collaborative agreement with NCL in June of 2018 to participate in the Union Catalog of Rare Chinese Books.