The festival is taking place in Tay Thien site within the Tam Dao National Park with a diversity of flora and fauna, beautiful landscapes and favourable climate conditions.
It is held annually on the fifteenth day of the second lunar month to commemorate Mother Lang Thi Tieu, who made great contributions to national defence and agricultural development during the era of Hung Kings.
The site was recognised as a national historical relic site in 1991 and a special national relic site in 2015. There are numerous temples in the site, including Thuong temple, Tam Toa Thanh Mau temple, Co Chin temple and Thong temple.
Vinh Phuc is home to several popular tourist destinations, including the Tay Thien site, Tam Dao Resort, Tam Dao National Park and Dai Lai Lake. It also owns bountiful tangible and intangible cultural values with 1,000 relics.