…Motian (along the Gansu-Sichuan border), Micang and Daba (which together straddle the Shaanxi-Sichuan and Shaanxi-Chongqing borders), and Wudang (in Hubei) mountains—that form the northern rim of the Sichuan Basin. The Daba Mountains are drained by a complex river system that serves as the watershed for the Yangtze River (Chang Jiang)…
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