Vu Ngoai Communal House

During the Hung Vuong era, Vu Ngoai village (now Song Vu Hamlet) had a very large lotus pond, into which hundreds of streams flowed. One day, without any storm, thunder roared across the sky, the fragrance of lotus spread strongly, and in the middle of the lake appeared a Water Deity with a human head and a snake's body, its body like a pink silk ribbon; it shot straight up from under the water into the sky, danced, and vanished. The people piled up earth to make a foundation and built a shrine to worship the deity right at the pond; later they chose a high, dry place in the bamboo forest to build a shrine for the deity. Every year on the deity's death anniversary, the 10th day of the second lunar month, they carry the palanquin and the deity from Truc Shrine to the communal house to hold a festival. When the Trung Sisters rose in rebellion and fought the enemy through this land, the deity appeared and accepted to provide unseen assistance to the two sisters; when they ascended the throne, the Trung Sisters bestowed on the deity the title Pho Phuc Dai Vuong. Under the Dinh dynasty, Emperor Tien Hoang went to suppress Duong Canh Thac's warlord forces in Do Dong, Thanh Oai District, and was assisted by Pho Phuc Hong Y, so he returned in triumph; remembering this, King Dinh had hundreds of officials come to offer thanks, issued a proclamation honoring the deity, and successive dynasties conferred beautiful titles, totaling 30 edicts.

Vu Ngoai Communal House was ranked as a historical-cultural relic by the Hanoi City People's Committee in 2025.