Hongmen wine brewing skills (expanded), a traditional skills project of the sixth batch of representative expansion projects of Lianyungang's municipal intangible cultural heritage. Hongmen wine was first brewed in the Northern Song Dynasty, and it has been more than a thousand years. In the Qing Dynasty, there were nine wine lees workshops in the Hongmen area. After Sun Yangzhu became the chairman of Jiangsu Hongmen Wine Co., Ltd., the company's registered capital was 15 million yuan and the total investment was 30 million yuan. It covers an area of more than 20,000 square meters and a construction area of more than 10,000 square meters. It has 40 employees, including 12 professional and technical personnel and managers. The company uses advanced production equipment, and the assembly line is equipped with a series of automated mechanical equipment such as automatic washing and brushing bottles, drying, filling, capping, and packaging. At the beginning of the 21st century, Hongmen's brewing technology entered a new period of development. In summarizing the traditional process of Hongmen wine, Hongmen Brewing Co., Ltd. has inherited the technology of Hongmen wine and maintained the traditional brewing process of Hongmen wine. Hongmen wine uses high-quality sorghum, wheat, rice, corn, and glutinous rice as raw materials, uses barley, pea products, and Daqu blocks as saccharification and fermentation agents, uses Lao Lingquan well water with a history of hundreds of years for fermentation and natural Jinping Mountain spring water for blending, adopts the traditional Lao Wu甑 process of mixed steaming and mixed hanging and combines it with modern brewing technology. It has other basic characteristics like Red Rose Wine, with a full body, soft and refreshing. The Hongmen wine production process represented by Hongmen Brewing Co., Ltd., with its unique formula, long culture and exquisite and skilled Wuliang Lao Wu甑 process, combined with modern brewing technology, has formed an excellent brewing process, a unique wine style and a wine culture with regional style.