"Gansu(甘肃):Yao river basin(洮河盆地),Tebbu Yian, alt. 3000～3600 m"
I've found out that "Yao river" is incorrect (should be "Tao"), but "Tebbu Yian" eludes me. Is it a city? a mountain? a valley? I have no idea because I know no Chinese! All I know is that it's Gansu and somewhere around that river. Any help?