Students have to leave their books and learning materials in a corridor as they study in a crowded classroom at Jianmenguan High School in Jian'ge County, Southwest China's Sichuan Province, May 7, 2018. Senior high school students are making final preparation efforts for the national college entrance exam, known as Gaokao, set to take place in one month's time. (Photo/VCG)
Students have to leave their books and learning materials in a corridor as they study in a crowded classroom at Jianmenguan High School in Jian'ge County, Southwest China's Sichuan Province, May 7, 2018. Senior high school students are making final preparation efforts for the national college entrance exam, known as Gaokao, set to take place in one month's time. (Photo/VCG)
Student learn in a classroom at Jianmenguan High School in Jian'ge County, Southwest China's Sichuan Province, May 7, 2018. Senior high school students are making final preparation efforts for the national college entrance exam, known as Gaokao, set to take place in one month's time. (Photo/VCG)
A majority of students nap after lunch at Jianmenguan High School in Jian'ge County, Southwest China's Sichuan Province, May 7, 2018. Senior high school students are making final preparation efforts for the national college entrance exam, known as Gaokao, set to take place in one month's time. (Photo/VCG)