“吹牛皮”是我国民间常用的一个俗语,今义是指“说大话,夸口”。那么,这一俗语及其用法是怎么来的呢?据专家考证,“吹牛皮”一词起源于我国的黄河上游一带。黄河在流经青海、甘肃、宁夏、陕西等省(区)境内时,水流湍急,滩险浪恶,很难行舟。在桥梁交通不发达的古代,生活在黄河上 “Blowing leather” is a folk saying common in our country, meaning is meaning “to speak, boast.” So, how does this idiom and its usage come from? According to expert research, the term “blow leather” originated in the upper reaches of the Yellow River in our country. When the Yellow River flows through the provinces of Qinghai, Gansu, Ningxia and Shaanxi provinces, the Yellow River flows rapidly and the waves of the beach are very elusive. In the ancient bridge traffic underdeveloped, living in the Yellow River