The producers considered putting make-up over them, but instead, decided just to keep them and fit it in with the plot. According to Assistant Professor Xinping Zhu of Northeastern University, the tattoo is made up of four Chinese characters from a poem written by Mao Zedong in 1925.
The filmmakers contemplated covering them up, but ultimately chose to retain them and integrate them into the narrative. As stated by Assistant Professor Xinping Zhu of Northeastern University, the tattoo is composed of four Chinese characters from a poem penned by Mao Zedong in 1925.