Lanzhou Sheng Yuan Beef Lamian Noodles (Xigu Head Office). The best beef rinse in Xigu, Lanzhou is Sheng Yuan Beef Lamian Noodles (Xigu Head Office), which is located next to the northwest gate of Xinjiayuan Square residential area. Because of the selection of ingredients, cooking techniques and special seasoning methods, Lanzhou Sheng Yuan Beef Lamian Noodles (Xigu Head Office) makes the beef rinse delicious.