North Mountain Xi Zhi He, alas! Bringing the Royal Plaza Gu Xi, well! Palace Cui Wei Xi, well! Man of the travail Xi, well! Liao Liao Wei Yang Xi, well!
Tang Liang Hong had Luoyang North Mang Shan, see the gorgeous palaces, a sense of the sufferings of the people, then as a poem. 5 used for tone poem the word "alas" yī, hence the name.