It is a warrior.
Seediqs were the indigenous people that defended their nation Taiwan from invasion by Japan and China before WW2. Many nations outside of Asia in fact as Portugal attempted to colonize an island the size of Israel.
Today less than 10% of Taiwanese speak their native tongue. It is mandarin majority spoken and hokkien from the Fiji islands.
I obtained the shirt in Taiwan to honor the lost souls to this nation. I might post videos I took of the small tribe left.
short documentary trailer