From Yan'an to Hukou Waterfall, passing through Nanniwan, the general vehicles will stay here for 15 minutes. The road in Nanniwan is well repaired, there are few trucks, and the greenery is not bad. The green rice fields, the green hills, if not the cave caves on the side, are like Jiangnan. There are few old houses left, and the monument will tell you the history you don't know. In March 1941, the Eighth Route Army "three five nine brigade" launched a famous large-scale production campaign in Nanniwan. The spirit of Nanniwan is an important part of Yan'an spirit, its self-reliance, hard work and strong spiritual core, inspired generations of Chinese children to overcome difficulties and win. A "South Niwan" makes the spirit here live alive in the memories of generations after generations. The whole scenic spot is actually not big, mainly with large terraces, Nanniwan Production Sports Exhibition Hall, Comrade Mao Zedong's old residence when he inspected Nanniwan, Jiulong Spring and Martyrs' Monument. The artificial ingredients here are obvious, and I personally think that 15 minutes is enough.