Keywords: Royal order concerning tax exemption, Tay Son dynasty, 15 May of 3rd year of Quang Trung reign (1790 AD), paper - National Museum of Vietnamese History - Hanoi, Vietnam - DSC05654.JPG en Exhibit in the National Museum of Vietnamese History Hanoi Vietnam Photography was permitted in the museum without restriction This artwork is old enough so that it is in the public domain 2014-08-06 03 40 02 own Daderot other versions cc-zero Uploaded with UploadWizard Collections of the National Museum of Vietnamese History Emperor Quang Trung |