After experimenting with many different compositions of brass, he discovered that adding a certain percentage of phosphorus imparted just the degree of malleability needed to pound out a beautifully resonant gong.
嘗試過添加有各種成分的銅片之後，林午發現加入一定比例「磷」的青銅軟硬適中，延展性佳，才能製作出聲音響亮、音質優美的銅鑼來。