What's the function of moving the grave in the last paragraph of the movie "The Judge of Death"?

In fact, if there is a second film, it is time for Cixi to appear. At the end, it should be preparing for the sequel. Everyone knows that Song Shijie in the play was a teacher in the late Qing Dynasty, so what happened in the late Qing Dynasty? Reading history should know that Emperor Guangxu was imprisoned by his mother Cixi in the Forbidden City and signed an unequal treaty with Eight-Nation Alliance. Before Puyi ascended the throne, Cixi ordered eunuch Li to poison the medicine that Guangxu drank, which poisoned the Emperor Guangxu. Song Shijie is actually very clever. Later, he joined the Sun Yat-sen League, participated in the Revolution of 1911 and died heroically in the Revolution of 1911. The coroner finally moved the grave of his dead son. In China, sons mean dragons, dragons are royal aristocrats, and Long Mai means emperors. The direction of Long Mai has changed, which means that the political party will change soon, the emperor will die and the country will be in danger. If the second film is made, it will definitely tell the story that Cixi can't cut Song Shijie.