Trams in Shenyang was introduced in Shenyang from 1924, and had 6 lines in operation up until 1945. It suffered major disruptions during the Chinese Civil War from power outage and Kuomintang bombings, but quickly resumed operation after the conclusion of the Liaoshen Campaign. After the establishment of the People's Republic of China, the tram network was gradually replaced by the buses and trolley buses, and eventually closed in 1974.[107] In December 2011, the Shenyang city government announced plan to rebuild light rail transit network in 2012, comprising 4 lines with 60 km (37 mi) distance in the Hunnan New District.