 In printing pictures, Đông Hồ craftsmen use a special type of paper named "giấy điệp".The paper is obtained in almost the same way as "dó" paper.The bark of "dó" tree, which normally is grown in Tuyên Quang Province, is soaked in water for months, then mixed with powders of seashells ("sò điệp"), which is the origin of the paper's name, and glutinous rice to make sheets of paper.