Photo shows an aerial view of the Zunyi Conference site, located in the old town of Zunyi City, Guizhou Province. The key structure is a two-story wood and brick building combining Chinese and Western architectural style. A four-day tour for foreign and Chinese experts to exchange of opinions, entitled "Progress along the Long March of the New Era" kicked off in Zunyi, Guizhou Province on Nov. 21, 2017. It was at a meeting in Zunyi in 1935, that Chinese Communist leader Mao Zedong emerged victorious as the highest authority of the Communist Party of China. This milestone in the famous "Long March" has made it a pilgrimage site as well as a symbol of the communist revolution. [Photo by Sun Tao/China.org.cn]