"Singing in Nha To", "Singing, dancing in Cua Dinh" of the Vietnamese in Quang Ninh province was decided by the Minister of Culture - Sports - Tourism as the intangible cultural heritage of the country. This is an honor for the peoples of Quang Ninh, especially the people of Van Don, Dam Ha and Mong Cai. The main contents in the book include: History of the formation and development of Singing in Nha To, Singing in Cua Dinh; Collecting and studying the customs and habits of Van Ninh villagers; The features of music, costumes, dance and folk songs; historical and artistic value of the Singing in Nha To, Singing in Cua Dinh; Preserve and promote the value of the intangible cultural heritage of the Vietnamese people in Quang Ninh.