The PoD's too recent to warrant a change in vexillological conventions. For that, you need to go back to the age of chivalry.Vexillology rule are quite stupid and could perfectly be different in an ATL
So just do something that looks good, I prefer 1 personally
That said, China doesn't have to follow the old metal-on-tincture rules. They're not hard standards any more than heraldic conventions are, especially in 2019.