Introduction to the poplar forest: In spring and summer, the lush branches and leaves of the poplar forest cover the sky and the sun, and the cool breeze blows in the forest. People either lie in hammocks or sit on wooden chairs beside the forest trails to enjoy the most comfortable time; In late autumn, leaves are floating in the forest, and the ground seems to be covered with golden clothes; the golden poplar forest contrasts with the surrounding dark green vegetation and blue river water in the sun, just like a picture of autumn painted by nature. Rich oil painting. In early summer every year, travel enthusiasts from all over the country gather in the Yellow River Park to participate in the Ten Thousand Tent Festival hosted by Sanmenxia City. Yangshulin is the main campsite.