| ⊕ Middle Han-shui basin (Zhashui + Ankang + Baihe)... Yan-he + Luo-he lower rivers (Yan'an)... Bayushan highlands (Dingbian)... Huan-jiang river (Huan-xian + Qingyang)... Qingshui-he upper river (Ningxia-Huizu-SE.)... Pingliang... Baoji... Huang-he upper river ... Jingtai + Jingyuan... Xining valley... Laji-shan mountains... Dunhuang |