The flag of the Jingdaoese Empire has changed through its history. The Imperial Sun flag is, the official flag of the Empire. The original flag of Jingdao is now in use as the Flag of Nanjing.
Flag of South Batavia (4510 - 4635 ASC) and the First Empire (4635 - 5555 ASC)
Flag of the Second Empire (5188 - 5719 ASC)
Flag of the Third Empire (5719 - 5984 ASC). During the Second Empire a blue blackground was used.
Flag of the Third Empire (5984 - present)