Has a history of more than 100 years. The ingredients are strabismus (sedge) and father (jute). They grow locally, attached to the dunes, alluvial grounds along the Hậu River, when needed, they import from other places. Production process: Wash strabismus, remove floats and sort; dye the dye, dry it, then hang it up high. Before weaving, strabismus is soaked in water to make it soft enough. Jute is sewn into tendons and then attached to the loom. After weaving, the mats will be dried to avoid mold and mildew, then bound, scraped, and trimmed. The loom is handmade, operated by two people. Products have several types: snail-scale mats, cotton mats, chess mats, ordinary white mats, antique mats. They weave mats during the day and sell them at night at the night market according to the rule: The next night the meeting is 1 hour later than the night before.

National Intangible Cultural Heritage, Republic of Korea Wanchojang refers to an artisan with the skill of making objects with sedge (Cyperus exaltatus, wanggol in Korean), which is an annual/biennial plant that grows in a wet rice paddy or swamp. It grows to a height of 60 – 200cm. Sedge is used to make mats, seat cushions, and baskets. According to Samguk sagi (History of the Three Kingdoms), sedge was used during the Silla Period (circa 57 BC – 935 AD). During the Goryeo Period (877 – 1394), a sedge mat was laid on the place where the deities of the State are enshrined. Sedge mats were used chiefly in royal palaces, and they were also sent to China as gifts. During the Joseon Period (1392 – 1910), sedge mats were used mostly in royal palaces or in the homes of upper class people. In foreign trade, the mats made in Korea were regarded as luxury goods. Sedge products are made either manually or with tools. Mats and cushions are made either with a coarse weaving technique with warps exposed or with a close weaving technique with warps not exposed. As for the manual weaving method, eight warps are entwined to form a “井” shape and then two wefts are woven into it to make round or octagonal cushions and baskets. Production of sedge goods once went through the doldrums, but it regained strength in the 1970s and thereafter. Up to now, sedge has been used chiefly to make mats and baskets, but it can be used to make many other objects without the need for special tools by adjusting the colors and the thickness of warps and wefts.