I don't know about historic accuracy because it is a work of fiction. But I do not agree with the people who made this drama caving in to China and using so many Chinese props and so forth.
I'm pretty disgusted with cancel culture. Ji Soo is a great actor and has been acting for many years, and suddenly somebody brings up something that happened 13 years ago when he was young. Bullying in every way is a horrible thing, but if you're going to stop it you have to do it when the person's actually pulling and not after he has grown into an adult and made a good life for himself. The person they should be looking into are the people who complained about him after all of this time. If they were that concerned about it why did they complain about him years ago? The person who's replacing him is not half as good as actor.