First I would like to request removing the tag "Antihero / Antiheroine" its so unjustified ,you can put instead "Hated Protagonist" or "unlucky Male Lead"
Wei Wuxian is a great as a character and as a heroine "HE IS A TRUE HERO" ,no one understood him in the past which was led to him to be tagged as an "evil" being ,he is self-sacrifice ,always put anyone in need ahead of him ,have great deal of self respect with sold self confident ,grateful to anyone doing him the smallest deed ,smart ,and have great deal of justice.
No one believing in him ,holding all the heavy duty by himself ,no one understood his action enough to make him trust them to listen to them (as we see in the present when he found that someone he listened) ,abounded by his closets family's ,lead to him being target to every great evil greedy men.
And the Jiang siblings just HATE THEM THE MOST ,They're Despicable ,selfish ,no quality of leadership ,no bond(just appearance) ,ungratefuls ,cowards ,lack self respect ,shallows and depending ,Wei Wuxian would have been greater leader than chang for the jiang clan
And they left "Wei Wuxian" all alone defending the people the "JIANG" clan in debt to ,holding the heavy duty alone knowing what a weak point he have ,in same time disagreeing his act
Really all his suffering was from the jiang ,if the jiang father left him alone he would have been better....
And they want him to listen (in other word always agree and obey in wrong or right) while they never did ,and want him to follow them blindly without even trying to give him solutions to the problems he is displaying to them ,so of course he will lean to his way as there's no other way to protect and do justice
I hate how the writer stripped him from all his high horse and credits ,left him with the worst that satisfy the ones who were jealous of him or wanted him to be weak...,while he deserve to be restored to his highest rank he was on....he really was the biggest loser in all of this and that sadden me the most...
GREAT SORY ,GOOD ART (JUST a little CONFUSING IN SIMILAR DRAWN CHARACTERS) A MASTER PIECE AND A HIDDEN GEM ,I found it by coincident ,not in top BL or Shonen Ai or other tags while it should had been...
By the way the anime was badly adapted like thrown pieces from the story here and there mixed with nonsense fillers and done great damage to the story and story understanding and to the mc and to his love interest ,besides killing the feeling between the 2 mc ,they even removed any hint of even bromance .And they totally destroyed the mystery element in the left hand body parts tracking arc which was the best in all of the story...I strongly wouldn't recommended the anime ,or at least not as a first source of the story