According to official website of Cha 'an Transportation Bureau, in June 2022, the inland subway in this city provided free services to retired cadres, retired civilian cadres and retired non-commissioned officers, survivors of martyrs, survivors of soldiers who died in the line of duty and survivors of deceased soldiers of China People's Liberation Army and Chinese People's Armed Police Force, excluding police duty.
Xi is the capital of Shaanxi Province, a sub-provincial city and the core city of Guanzhong Plain urban agglomeration. This used to be the starting point of the ancient Silk Road.