阅读李贺《雁门太守行》一诗，回答相关问题。
                                                                                   黑云压城城欲摧，甲光向日金鳞开。
                                                                                   角声满天秋色里，塞上燕脂凝夜紫。
                                                                                   半卷红旗临易水，霜重鼓寒声不起。
                                                                                   报君黄金台上意，提携玉龙为君死。