In 1127, the Song emperors Qinzong and Huizong were captured by forces of the Jurchen-led Jin dynasty (this incident is known as the "Humiliation of Jingkang", as mentioned in the poem).
However, James T. C. Liu, a history professor from Princeton University, states that Yue Fei's version was actually written by a different person in the early 16th century.
Liu suggests the "real author of the poem was probably Zhao Kuan who engraved it on a tablet at Yue Fei's tomb in 1502, in order to express the patriotic sentiments which were running high at that time, about four years after General Wang Yue scored a victory over the Oirats near the Helan Pass in Inner Mongolia.
"[1] The poem has been set to music various times, including a Mandarin song from the 1930s performed by operatic baritone Yi-Kwei Sze in the 1950s.
Another Cantonese song of the same title was composed by Kwan Shing-yau and performed by Deric Wan for the 1984 Hong Kong television series By Royal Decree.