Yiling (barbarian mound), historical place name in Yichang county 宜昌縣|宜昌县 Hubei, first mentioned in history (after its destruction by Qin) as burial place of the former Chu kings / Yiling district of Yichang city 宜昌市[Yi2 chang1 shi4], Hubei
to use foreigners to subdue foreigners (idiom); let the barbarians fight it out among themselves (traditional policy of successive dynasties) / Use Western science and technology to counter imperialist encroachment. (late Qing modernizing slogan)