Brass gongs and bicycles Although Lin had become quite proficient in the manufacture of steel gongs, the steel contained a lot of impurities, and the sound of gongs made from it was shorter and sharper than he cared for, so he began making his gongs from very expensive brass.
一面銅鑼等於三輛名牌腳踏車雖然，鐵鑼製作已經上手，然而鐵的成分雜質較多，聲音也較短促生硬，於是林午開始使用昂貴的銅片來製鑼。