The flag of YinYangia is actually an orange background with a Yin Yang sign, usually red and yellow instead of Black and White.
Flag of the Gawudzan Republic (1785-1883)
Flag of the QPC Empire (1883-1936)
Flag of the Toralaq Republic (1936-1999)
Flag of the Republic of YinYangia (1999-2004)
Flag of YinYangia (2004-present)