line of Chongqing. Opened on 28 September 2012, it connects Nan'an, Yuzhong, Jiangbei and Yubei districts in central Chongqing. A northern branch, from Lijia to Wulukou, Beibei District, was opened on 31 December 2013, long with five stations. Phase 1 of the Chayuan extension was opened in 2014. Thales provided an operations control centre for the line. Line 6's color is pink. Line 9 The first phase of Line 9 opened on 25 January 2022. Line 9's colour is crimson. Line 10 The line serves the North Railway station and the airport terminals. The first phase (Liyuchi to Wangjiazhuang) opened on 28 December 2017, and the second phase will connect Yuzhong and Nan'an districts by crossing the Jialing and the Yangtze rivers. Two new bridges, Zengjiayan Jialing River Bridge and Nanjimen Rail Transit Bridge, are under construction for train services to the south. Line 10's color is purple. Jiangtiao line Jiangtiao line is a suburban rapid transit line connecting Jiangjin District with the metropolitan area. There will be through service between Line 5 and Jiangtiao line in the future. Jiangtiao line's color is blue. Fares Single-journey ticket Tickets range from 2 ( USD) to ¥7 ( USD), depending on the distance. Day passes cost ¥18 ( USD). Refund Only unused tickets bought on the same day and at the same station can be refunded without an explanation. If the train was delayed for over 15 minutes, the tickets may be refunded, and a certificate of delay can be acquired. Transport cards CRT accepts Life & Transport Card (Chongqing Universal Card, released by Chongqing City Card Payment Co., Ltd.) and its compatible cards, released by partner companies in other cities of China. There is a 10% discount applied to the Regular Card if it is used on public transit in the city. The higher price is paid for transfers between the bus and the metro within 1 hour (not including metro-to-metro, according to the paying time). The Regular Card can be purchased at any CRT station, and a deposit can be recovered when the card is returned with its receipt. In addition the card can be used in many shops, cinemas, restaurants, etc. in Chongqing. The Students' Card and the Elders' Card can not be directly used on the metro since their monthly fee covers only buses unless a cash sub-account, which allows a 50% discount, is added to the cards