characters of chinese influence. or, totally chinese influence. XD
these armors are based off popular chinese depiction of ancient warriors, which use the Tang dynasty armor for basis, and various decorations are added for visual interest. commonly, it has been a popular thing to draw most ancient heroes in the Tang dynasty fashion, as it is most recognized dynasty in most accounts. so much that the chinese is referred to as the "Tang people"
this tendancy to make ancient heroes into the wrong time period for pure visual interest is not unlike the westerners for drawing King Arthur into the 15th century fashion, even though he was much much earlier on in history.
it was a fun thing to learn about.