1988. official website of Shaanxi xifeng liquor co., ltd shows that the production time of xifeng liquor sapphire 1988 is 1988. Xifeng liquor is a specialty of Fengxiang District, Baoji City, Shaanxi Province, and a landmark product of chinese national geography. Xifeng liquor, called Qin liquor and Liulin liquor in ancient times, is a local traditional famous wine produced in Liulin Town, Fengxiang District, Baoji City, Shaanxi Province, and is one of the four famous wines in China.