Legal basis: Article 5 of the Restructuring Plan of Guangzhou Metro Design and Research Institute Co., Ltd. As of June 2020165438+1October, the total length of Guangzhou Metro Line 9 is 20. 1 km, all of which are underground lines; * * * Set 1 1 stations, all of which are underground stations; The train adopts 6 B-type trains. In 20 17, the average daily passenger flow of Guangzhou Metro Line 9 was135,400, and the maximum daily passenger flow was183,200 on February 3/7.