By Anonymous (not verified) , 21 August 2025 Harvest classmarks ^(Hán|Nôm|Hán Nôm).*\d+$ Type modern Library address National Library of Vietnam 31 Tràng Thi, Hoàn Kiếm Hà Nội 100000 Vietnam Geofield PostGIS POINT (105.849222 21.026014)