It's called The Iron Empress so it's expected for this empress to carry certain characteristics as implied by the title but eventually everything boiled down to her being super stubborn gradually making me dislike her over time. It messed up her character value in one way or another. All of the characters that were in position of power were delusional and gullible which is exactly what the drama was built on. This is a cheap way to create melodrama to drive the drama, it's fundamentally annoying no matter how they spin it and justify it. So don't expect any clever plays by these samples. The drama clearly lost focus by the end. The writer wrote the story into a corner after a very long, repetitive and tiring melodrama and didn't have much to show for the ending so they resulted in throwing new events to have an ending rather than having both events running in parallel. How historical accurate that last portion was is irrelevant if it was presented with poor storytelling. This wasn't an enjoyable watch. The Iron Empress needs to touch some grass.
