not in the restaurant. Du Xifeng is a native of Xi 'an, Shaanxi Province, a China culinary master, a national senior technician, a standing committee member of the Famous Chef Committee of China Cuisine Association and director of Shaanxi Work Area, a national first-class judge of the catering industry, a national registered referee, and a vice president of Shaanxi Cuisine and Catering Industry Association. As of June 2, 2122, Du Xifeng was mainly responsible for the hygiene inspection and quality management of the catering industry in Xi 'an, and he was no longer in any restaurant.