Latest archaeological confirmation! The Yangjia City where the Yang family generals were stationed in the Northern Song Dynasty should be Linzhou City during the Tang and Song Dynasties. The site of Yangjiacheng City is located in the Loess Liangmao area northwest of Yangcheng Village, Dianta Town, Shenmu City.

Most of the relics found in the city are from the Song and Jin Dynastie, which should be roughly the same period as the discovered East City, Inner City and West City.