There are various versions. Official website, Education Bureau of Zhoukou City, Henan Province, shows that the textbooks for junior middle schools in Zhoukou City are known as People's Education Edition, Mathematics Edition of West Normal University, English Edition of Foreign Teachers, Physical Chemistry Edition of Science and Education Edition, and other subjects are not unified versions, but they are all formal textbooks for the national unified examination. Henan Province, referred to as "Yu" for short, is the provincial administrative region of People's Republic of China (PRC) (China). Zhengzhou, the provincial capital, is located in the middle of China, bordering Anhui and Shandong in the east, Hebei and Shanxi in the north, Shaanxi in the west and Hubei in the south. Most parts of Henan Province are in the warm temperate zone, which belongs to the continental monsoon climate of transition from the north subtropical zone to the warm temperate zone. Known as the hinterland of Kyushu and the thoroughfare of ten provinces, Henan is an important comprehensive transportation hub in China.