Chinese is a unified edition, mathematics is a people's education edition and English is a foreign research edition. Official website, Education Bureau of Leshan City, shows that the textbook version of Grade One in this city is a unified edition of Chinese, Mathematics, English, History, Physics, Chemistry, Politics, Biology and Geography. Leshan City, a prefecture-level city under the jurisdiction of People's Republic of China (PRC) and Sichuan Province, is located in the south-central part of Sichuan Province, and is one of the central cities in Chengdu Plain planned and constructed by Chengdu-Chongqing urban agglomeration.