lead counterfeit of a silver spearhead;a good-for-nothing with an impressive appearance;fine feathers but no fine birds
银样镴枪头镴（蜡）yín yànɡ là qiānɡ tóu
镴（蜡）:焊锡。表面上像银制的，但实际上是焊锡做的枪头。比喻表面上好看，但实际上不中用。an impressive-looking but useless, a pewter spearhead that looks like silver