Historical records during the reign of Anjang are rarely found throughout East Asia with some erroneous marks on his death: the Book of Liang completed in 635 says Anjang died in 526 although the actual date is believed to be about five or six years later; The Japanese chronicle Nihon Shoki quoting Baekje Bongi says Anjang was killed amid bloody chaos, which implies the final years of his reign were unstable.
Historical records about Anjang's reign are scarce in East Asia, with some discrepancies regarding his death: the Book of Liang, written in 635, states he died in 526; however, historians believe his actual death date was five or six years later. The Japanese chronicle Nihon Shoki, citing Baekje Bongi, describes a period of chaos and bloodshed during Anjang's final years, suggesting instability.