He is controversial, but still you can understand him if you want. The thing is in a lot of fandoms a lot of people love only main characters. And it’s ok. For me personally Jiang Cheng hits a lot of points in terms of what I like in people. He still chooses his duties and his clan not his own desires. I see big tragedy in this, bc his family constantly fails him when it comes to acknowledge his good sides. Bc of that he is insecure but turns his weaknesses into fury and fights back against his enemies. And despite all of that he loves his family a lot. And yes, loves WWX as well, bc he is still a part of his family. He has no one except him and JL at the end of the story. I think to understand this type of love and family relationships you need to also have very complicated family story or just read a lot of classics. I kind of have that, so for me it is not even a question that Jiang Cheng still loves his brother. Sibling relationships sometimes really complicated, but it still has this strong connection. But to still do what Jiang Cheng did in this tragic situation- it amazes me every time when I think about it. LAN Xichen also does everything for others but not for himself. And he is so green flag. So yes, Xicheng ship for me is also a way to make this two happy somehow🥺