bazhong chen shou chengdu chinese language chongqing deyang geographic coordinate system guangyuan leshan li xiannian liangshan yi autonomous prefecture list of administrative divisions of sichuan luzhou meishan metre mianyang ming dynasty nanchong neijiang ngawa tibetan and qiang autonomous prefecture panzhihua pinyin politics of sichuan prefecture-level city qing dynasty renminbi shaanxi sichuan song dynasty suining tang zhen three kingdoms wade-giles wanyuan wuhan xu shiyou xu xiangqian yibin zhang aiping zhang sixun zigong ziyang