"August for Father's death anniversary, Mother's death anniversary in March", every year on March 30 and April 1 of the lunar calendar, people from all ethnic groups at the foothills of the western slopes of Yen Tu, Luc Nam district (Bac Giang) are excited again. Suoi Mo Association. The festival commemorates the goddess My Nuong Que Hoa, revered as the Holy Mother of Thuong Ngan, who openly cleared the land, opened cool streams, taught people to cultivate to have a prosperous life.