The Qin Mountains (simplified Chinese:秦岭; traditional Chinese:秦嶺; pinyin:qín lǐng; Wade–Giles:Ch'in Ling), sometimes called the Szechuan Alps, are a major east-west mountain range in southern Shaanxi Province, China. The mountains provide a natural boundary between North and South China, and support a huge variety of plant and wildlife, some of which is found nowhere else on Earth.