Line 3 (Xuzhou Metro)Line 3 of the Xuzhou Metro is a rapid transit line in Xuzhou city, Jiangsu province, China. It is the third metro line to open in Xuzhou.HistoryPhase 1Phase 1 of Line 3 was opened on June 28, 2021. It is 18.13 km in length and fully underground.Phase 2Phase 2 of Line 3 opened on 3 December 2024. It added 6 stations and a total of 8.13 km in length. The South extension is elevated and the North extension is underground.