Why should Line 7 and Line 9 be opened to traffic at the same time? If you look at the map carefully, you will find that these two lines cross twice at Hongling North and Chegong Temple. Anyone who has been there knows that it is very convenient to transfer between the two stations. In this sense, these two lines actually play the role of changing lines. It should be noted that it is very difficult to set up a large ring road in Shenzhen, a city with narrow land and dense population, and the negative effects of th: brought a very bad ride experience. Based on this, the design of Line 7 and Line 9 is very reasonable. However, lines 7 and 9 have great shortcomings. 0-@ .com Line 7 Huaqiang South to Fumin section is too dense, and the east section of Line 9 crosses Line 1 many times but doesn&;t change, which is why the passenger flow of Line 9 can&;t get on (this will be greatly improved after the west operation of Line 9 and the extension of Line 11 and Line 5 to the Grand Theatre connecting the existing Hongling South of Line 9 with the existing Grand Theatre Station, and the Grand Theatre may become the only five-line big one. In short, to highlight the significance of Line 7 and Line 9, we have to wait for the further improvement of the network. After the remaining lines (6, 10) of the third phase in 2020, such as :, and the first batch (14, 13) of the fourth phase in 2022, Huangmugang, Bagualing, Yinhu, Meng Ling and other stations will also become transfer stations, and the remaining lines will bring a large number of people from the original areas and urban lines outside the customs clearance. It is understood that Shenzhen Metro planning follows the concept of rail transit guiding urban development, in accordance with Amp” reinforced outer shaft, encryption center, connecting periphery. Quot, There are 32 planned urban rail lines, with a total scale of about 1142km (including about 53km of flexible development lines), which are composed of urban express lines and general speed lines. Among them, there are 8 urban express lines with a total scale of about 412km and 24 general-speed lines with a total scale of about 730km. In order to support Shenzhen in building a national economic center city and an international city, and give full play to the role of rail transit in guiding urban industrial upgrading and optimizing spatial structure, the planning and construction will take rail transit as the backbone, and all kinds of traffic will reach “45/70/70 amp； Quot development goal: 1. Amp”45 targets amp Amp” Rail Transit Travel: 45 minutes between the main and sub-centers of the city; 2. Amp”70/70 target amp Amp” Public transportation: Public transportation accounts for more than 70% of motorized trips, and rail transportation accounts for more than 70% of public transportation.