opposite to the bus station in Heping Road, Tongguan County, Weinan City, Shaanxi Province. According to the Baidu map, Laotongguan Chinese hamburger belongs to Laotongguan Snack Association, and the brand was established in 216. The company is headquartered in Shaanxi, opposite the bus station in Heping Road, Tongguan County. Laotongguan roujiamo is brown in appearance, clear in stripes, layered in interior, swollen in body, crisp in skin and tender in inside, with the best fire, soft and glutinous meat, creamy but not rotten, rich and mellow, and unique flavor.