Introduction to Lazikou: Lazikou evolved from the Tibetan word "Lazi", which means "narrow ditch". It is the only gateway that the Red Army must pass through during the Long March from Sichuan to Gansu. Here there are mountains and peaks, crisscrossing ravines, rapid currents, and dense forests. It has the potential of "one man can guard the pass, and ten thousand people can't open it." The Min-Diegu Road, known as the natural barrier, and the only pass in the Sichuan-Gansu-Tibetan area leading to the inland - the "natural barrier" Lazikou".