Decree 66/2000/NĐ-CP

To establish Phu Thinh ward on the basis of the whole land area and population of Phu Nhi, Phu Mai, Hong Hau and Yen Thinh hamlets in Vien Son commune. Phu Thinh ward shall have a land area of 297.95 ha and a population of 5,675.

To expand Quang Trung ward on the basis of merging the whole land area (23.14 ha) and population (903) of Thuan Nghe hamlet in Vien Son commune into Quang Trung ward. After the expansion, Quang Trung ward shall have a land area of 71.7 ha and a population of 8,487.- (Summary)