Yan 'an, Ruijin, Jinggangshan, Zunyi and Xibaipo. I'm not sure, but the revolutionary holy land should be the place where a historic turning point has taken place. The route of encircling the city from the countryside decided by the Jinggangshan stationed was established in Ruijin, and the Zunyi meeting confirmed Mao Zedong's leading position, not to mention Yan 'an. Xibaipo Conference was an important meeting before the liberation of China.