Haizhouwan Liquor Brewing Technique (Extension), a traditional skill project of the sixth batch of representative extension projects of intangible cultural heritage at the municipal level in Lianyungang City. Haizhouwan Liquor originated in the Northern Song Dynasty, flourished in the Ming and Qing Dynasties, and has a long history. This product comes from Shuigu Qinghua, with elegant fragrance, mellow and harmonious, sweet and refreshing, long aftertaste, elegant and unique style, full and perfect body, unique fragrance since ancient times, and can not be imitated anywhere, and is truly a treasure gifted by nature. Haizhouwan Liquor relies on the unique regional ecological environment and natural brewing microbial system, adopts the "mixed burning old five steamers" production process, mud cellar solid fermentation, continuous fermented grains (馇) ingredients, mixed steaming and mixed burning, and is different from the Sichuan-style liquor with strong aroma, strong cellar aroma and strong and aged, with mellow, sweet, clean and refreshing taste as the prominent characteristics, it is an outstanding representative of the world-famous Jianghuai School (Su, Shandong, Anhui, Henan) Luzhou-flavor liquor. Many celebrities have praised it since ancient times. Kong Shangren, a famous Qing Dynasty poet, dramatist and author of Peach Blossom Fan, once came here to explore the Haizhou Bay wine-brewing techniques in person, and wrote the famous line "Tanggou's legendary soil and water, its wine is peerless in elegance". Since then, Haizhou Bay wine has become even more famous throughout the world, and its reputation has lasted for thousands of years.