On the 23rd day of the third lunar month, the festival is organized in Le Mat Village. The Le Mat Village opens the festival to commemorate Hoang Duc Trung who had merit of taking poor people from Le Mat Village to the capital city to reclaim the wasteland to set up 13 barracks in the west of Thang Long Citadel (Ba Dinh District now). The festival involves water procession from the village well, carp catching, carps offering to god, feast (offerings) procession of 13 barracks in Ba Dinh District to the village then offer to god. Snake dance, processions of Ga ong (heavy cock), Lon ong (fat pig), contest of speciality cooking includes “Tam xa dai hoi” (3 kinds of snake: copperhead, krait, coluber), “Ngu ho chau lam” (5 frogs feast) and “Ly ngu vong nguyet” (big carps feast, feast of making of raw fish and vegetables).