Father refers to Yang. At that time, Yang was called the King of the Generation. At first, he might pretend to be a heavenly father and admonish Hong Xiuquan with the elements of admonition. Seeing that Hong Xiuquan was impressed by this, Yang began to blackmail Hong Xiuquan, the heavenly king, and eventually became the king outside the king.
Tian Xiong refers to Xiao Chaogui, who also exists in the Taiping Heavenly Kingdom as a generation of Tian Xiong and is related to Hong Xiuquan. Hong Xiuquan's younger sister, Hong Jiaoxuan, married Xiao Chaogui, so her identity is particularly prominent.
Father killed Brother Tian, actually referring to September 1852. Xiao Chaogui thought Changsha was easy to fight, but after playing in Changsha for a month, Yang was slow to send reinforcements. Finally, Xiao Chaogui was killed in Yintian Pavilion outside the south gate because he was alone.
Such consequences made the soldiers in Xiao Chaogui see the contradiction of the Taiping Heavenly Kingdom, and they were extremely disappointed with Yang and other senior generals. They thought that if it weren't for Yang, Xiao Chaogui wouldn't have died, so this song was written.
Canglang Fisherman, whose real name is Ma Rufei, was a Suzhou tanci artist during Xianfeng and Tongzhi years. The "Robbery of Skeletons" describes the period when Taiping Army occupied Suzhou. The poem "heavenly father kills heavenly brother" should be heard from the Taiping Army in Suzhou, which is a sign of the disintegration of the army in the late Taiping Heavenly Kingdom.
Speculation: The heavenly father/heavenly brother in this poem may not explicitly point to Hong Xiuquan/Yang or Yang/Xiao Chaogui, but joke about the general contradiction among the leaders of the Taiping Heavenly Kingdom at that time. There are also records of contradictions between Li Xiucheng and Chen Yucheng's subordinates, who call each other "Wild Hair".
Taiping Army captured Suzhou in June, 1860, Xianfeng Emperor collapsed in August, 186 1. According to this poem, Ma Rufei should have heard it during this time. Xiao Chaogui died in 1852. Whether there are only a few Taiping veterans left at this time and whether they are in Suzhou is unknown.
More likely, this poem was written by local people who joined the Taiping Army after the Taiping Army captured Suzhou. "God Kill Brother" Yunyang didn't send reinforcements, which led to Xiao Chaogui's death. Conspiracy theory is too strong, not enough. As for whether this poem appeared during the Tianjing Incident and then spread to Suzhou, no more evidence has been found.
Another possibility is that this poem was only spread in Jiangsu and Zhejiang provinces in order to gather people's hearts in the Qing court.