李白的一首《蜀道难》让世人领略了蜀地山势之险要,通行之不易;但李白还有一首描写太行旅途之艰辛的诗却少人注意,这首名为《北上行》的诗歌描写道:“北上何所苦?北上缘太行。磴道盘且峻,岩凌穹苍。马足蹶侧石,车轮摧高冈。沙尘接幽州,烽火连朔方。杀气毒剑戟,严风裂衣裳。奔鲸 Li Bai’s “Shudao difficult” to let the world a taste of the dangers of Shu mountain, access is not easy; but there is a description of Li Bai, the hardships of the Taihang journey but few people pay attention to the note, the first named “northbound” Poetry portrays: "Why is the north bitter? Northern margin Taihang. 磴 Road plate and Jun, Rock Lingcong Cang. Ma foot 蹶 side of the stone, the wheels destroy Gao Gang. Dust then you state, Severe crackle clothes. Ben whales