Beichuan Qiang Autonomous County (simplified Chinese: 北川羌族自治县; traditional Chinese: 北川羌族自治縣; pinyin: Běichuān Qiāngzú Zìzhì Xiàn; Qiang: Juda Rrmea nyujugvexueaji xae) is a county under the jurisdiction of Mianyang City in northern Sichuan province, China. It is located in an ethnically diverse mountainous region of Sichuan. Its Chinese name literally means "North" (bei) "River" (chuan). Its new county seat is located at Yongchang Town after 2008 Sichuan earthquake.