People's Education Edition A. As of July 15, 2023, according to the information of Lanzhou Education official website, the mathematics of grade one in senior high schools in Lanzhou is a unified edition, both of which are People's Education Edition A. Lanzhou, referred to as "Lan" and "Gao" for short, and called Jincheng in ancient times, is a prefecture-level city, provincial capital and I-type big city under the jurisdiction of Gansu Province.