Once things change, things change and people change.
"Changxi, I'm back to guard the country for you."
"Sister, do you have me in your heart?"
"This beauty is my sister's new favorite?"
"I will return this military power to you, and you and I will never owe you another two or three."
"Amiao, don't be afraid when you see me."
"I gave these people to my sister, but I really hope that my sister can let go of them all."
In the end, we sisters will still have to face each other with swords...