Wanzhuang Soy Sauce, the oldest soy sauce brand in Xiluo Township, was established in 1909. The brand persists in using traditional methods to brew black soy sauce. In order to pass down the culture of brewing soy sauce, Wanzhuang Soy Sauce built the first “Soy Sauce Museum” in Taiwan by transforming their old factory into a tourism factory; as a result, visitors could take a look at the traditional process of making soy sauce.