This is my opinion abt LCY (but you all know I always be his side)
For me he's pitiful character,always alone(unlike XF,she have AD,GJ, YN even PZ sometimes) like queen dowager said he always keep everything by himself,I think the one he close the most is his first brother,and as he know DC kill him (this first reason why he hate DC)
This second reason,both DC and Central plains hate each other, as royal prince,that's his duty to free his people from DC (we know how cruel DC to his people) and this is the only way to get him CP position,for revenge,for me not bcos greedy with power,if king the one greedy with power,he won't be a good emperor(but we all know in the end he devoted all his life to his country)
it's normal that they try find a way to take down their enemy (just this is his first guilty he use XF and his big mistake is he's falling love with her).
When he killed king of DC (king of DC sacrifice to save his people) that's why even he's forget after jump from the river,he still make funeral for XF grandfather,bcos all he knows DC king is a hero for his people)
Did he feel guilty with XF? of course he did,he almost kill himself twice (with sword before mr chai prevent it,he said he dunno how to face her anymore,and than he jump together with her)
and dun blame him abt XF parents,we all know the one destroy them is General Gao,not LCY.
Abt GJ death,I think I have the same opinion with @Le_Amarant , remember GJ the one provoke him,will take her from him,and he can't remember (all he know XF hate him bcos he's the one destroy DC but bcos of war,not bcos he betray her) and XF is not just woman,she's his wife,crown princess too,and both keep provoking him like nothing. man have some pride,especially he's a crown prince,and at least a wife must have honor too,especially she's a princess(sorry I really dun like XF when she decide go with GJ bcos she thinks he's GXW,and than it worst bcos her crying and hairpin hairpin means your true love and she's wear it in front of many people I still keep skip this scene )
@ayang23 about sacrifice to the one you love,their relationship is alliance marriage,it's not about themself,about 2 country,and finally XF see it,she's comeback and there's a war.
and finally she understands her duty as 9th princess. but I believe if LCY the one remember first,he'll find a way to let her go back to her country,but not with other man
And as LCY said that he can't face her anymore bcos his guilt,we can see after he remember everything,he really feel guilty and take everything she said to him,and everything is too late for them,they have a greatest love but they can't be together (bcos I believe if XF still alive,she won't forgive him and LCY will let her go) they just can't be together in this life.
I rant a lots sorry it will be my last rant,I'll just post pics after this, @J13 I still have many pics
thank you everyone in this forum,no matter we've different perspective and argument but it shows how much we love this drama.