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WikiPedia: Tứ_Xuyên http://59.252.131.7:800/cncaweb/info/7253.html;jse... http://61.157.76.150/ldjh/ldjh-content.asp?id=52&l... http://books.google.com.au/books?id=04QiOlNKQGEC http://app1.chinadaily.com.cn/star/2002/0411/cn8-3... http://focus.scol.com.cn/zgsz/20031226/20031226165... http://finance.sina.com.cn/roll/20081113/055525124... http://vietnamese.cri.cn/chinaabc/chapter16/chapte... http://www.sc.gov.cn/scgk1/sq/dl/200905/t20090514_... http://www.sichuan.gov.cn/ http://www.stats.gov.cn/english/statisticaldata/ye...