What's known—
Condition A: The kid knows me.
Condition B: The sister Wanyan the kid speaks of knows me.
Condition C: I don't know either of them.
It could then be understood that this was the work of the 'one who had occupied her body'.
After clearing it up, she said in a good-natured manner, "Sorry, I have amnesia. I've forgotten most of my memories from last year."
There was no way Yan Nai was going to believe her. The boy was trembling with anger. "You… You're lying again! You used to lie all the time, telling us that you got amnesia and tricking sister Wanyan to be good to you..."
He lowered his eyes, looking aggrieved. "You… Why do you have to pretend that you don't know me? You were the one who confessed to me, and you were the one who t-touched my hand..."
Xiang Yi: "..."
A light flickered in her mind as Xiang Yi remembered something.
No wonder Ah Nan and Xiang Feng would always use the term "ruined".