Guo Junlu, honorary chairman of Shanxi Mature Vinegar Group and national non-genetic inheritor of mature vinegar brewing technology, told reporters that Shanxi Mature Vinegar has a soft taste and a long aftertaste, and is famous for its unique color, mellow and rich in amino acids. Since the Ming Dynasty, Qingxu County, the birthplace of Shanxi mature vinegar, has created a unique brewing technique of mature vinegar.