Students hold and present 5 yuan banknotes as they pose to camera with their teacher at a classroom ahead of China's annual national college entrance exam or “gaokao” in Hengshui, Hebei Province, China, June 3, 2016. The school offers each student participating in the national college entrance exam two 5 yuan banknotes bearing serial numbers as souvenirs, which means good luck. (Photo by Reuters/Stringer)
