Beiyuan Restaurant was founded in the late 1920s and has a history of more than 70 years. Beiyuan Restaurant is located in the northern suburbs of Yangcheng, adjacent to Baiyun Mountain, with lush trees and quiet environment. There is also a small river flowing through the front, so it is known as "Mountain Restaurant, Watertail Tea ". The mustard salmon is also a characteristic of Beiyuan. The salmon salad is covered with a layer of yellow mustard. Smooth and tender, rather irritating.