ウェブ1 日前 · 長安: [ʈ ʂʰaŋ²⁴.ŋã²¹] Xi'an [a] is the capital of Shaanxi Province . A sub-provincial city on the Guanzhong Plain , [7] the city is the third most populous city in Western China , after Chongqing and Chengdu , as well as the most populous city in Northwest China . [8]