From Yan'an to Hukou Waterfall, through Nanniwan, the general vehicle will stay here for 15 minutes. The roads in Nanniwan are well repaired, with fewer trucks and good greening. Green paddy fields and green hilltops are like the south of the Yangtze River if they are not caves on the edge. There are few old houses left, and the monument will tell you a history you don't know. In March 1941, the Eighth Route Army "359 Brigade" launched a famous mass production campaign in Nanniwan. Nanniwan Spirit is an important part of Yan'an Spirit. Its spiritual core of self-reliance and striving for strength inspires generations of Chinese children to overcome difficulties and win victory. A song "Nanniwan" makes the spirit here live vividly in the memories of generations after generations. In fact, the whole scenic area is not very large, mainly including large terraces, Nanniwan Mass Production Exhibition Hall, Comrade Mao Zedong visited the old residence of Nanniwan, Jiulongquan and Martyrs Monument and other scenic spots. The man-made ingredients are obvious here, and the average 15 minutes is enough for the individual.