铜鼓原是一种打击乐器，后演变化权力和财富的象征，鼓面上一般饰有青蛙浮雕，源自壮族认为青蛙有多子、求雨的意味
The bronze drum was originally a percussion instrument, which later evolved into a symbol of power and wealth. The drum surface was usually decorated with frog reliefs, which originated from the Zhuang people's belief that frogs have meanings of many offspring and seeking for rain