“苏武留胡节不辱,雪地又冰天,穷愁十九年。牧羊北海边,心存汉社稷……历尽难中难,心如铁石坚……任海枯石烂,大节总不亏。”这段赞美爱国主义情操和民族浩然正气的歌词,源出于流传我国极广的一首古代歌曲——《苏武牧羊》。这首古曲产生的历史背景在公元前一百年天汉元年(汉武帝·刘彻年号)。当时,汉武帝为了嘉谢匈奴正单于尊汉天子为父辈、遣返被扣汉使的善意,特授 “Su Wu leaving Hu Festival without shame, snow and ice, the poor nineteen years. Shepherd north of the sea, heart Han Hanji ... ... experienced hard in the midst of hard rock heart ... ... The lyrics of this patriotic sentiment and of the noble nation are sourced from the ancient song ”Su Wu Shepherd," which spreads very widely in our country. The historical background of the song produced in the first year of the hundred BC Tian Han (Han Emperor Liu Che number). At that time, the Han emperor in order to thank Xiongnu is based on the emperor Han emperor as father, the repatriation of Han goodwill, special