On July 22, 2015, members of 'Chinese Tour' overseas Chinese youth summer camp visit Hukou waterfall in Yanchuan county, Shaanxi province. Hukou waterfall, located at the intersection of Shanxi province and Shaanxi province, is the largest waterfall on the Yellow River and the second largest waterfall in China. A total of 200 teachers and students of Chinese ancestry from Czech, the US, Canada, the Netherlands, Finland and Switzerland are touched by the Yellow River civilization at close observance.