Exquisite acrobatics perform "green past" of China-Laos railway construction. Engineers designed the most sensitive section of the railway around the Wild Elephant Valley Nature Reserve where humans and ecology intersect.

It is a story of meeting high standards such as traffic, finding new paths in the mountains with complex geology and ecology, and implementing the green "One Belt, One Road" concept. On January 22, the large-scale acrobatic light comedy "Wild Elephant Valley" segment "Tropical Rainforest" participated in the Yunnan Spring Festival Gala.