Because Big Sister wasn't necessarily Big Sister.
She could also turn into a little girl.
Or take some other form.
Xu Enguang wanted to be like Brother Xiao, able to recognize Big Sister no matter what she looked like.
Even if her appearance changed, Big Sister was still Big Sister.
Why couldn't he recognize her?
What was he lacking compared with Brother Xiao?
What else did he need to do?
Tell him.
Xu Enguang looked at Brother Xiao, full of anticipation.
A hint of pleading crept into his eyes.
"Mm..."
Xiao Xiao smiled.
"It's just a feeling."
"A feeling?"
Xu Enguang's mouth fell open.
If it hadn't been Brother Xiao...
Even though it was Brother Xiao...
For a moment, when he first heard that answer, he'd wondered if Brother Xiao was brushing him off.
But when he thought it over, he felt ashamed of himself.
How could Brother Xiao brush him off?
When they'd first met—
Oh, later he'd learned it was actually the second time—
Brother Xiao had been willing to spend so much time listening to him talk about himself.
How could Brother Xiao brush him off?
Given Brother Xiao's personality, if he couldn't say or didn't know something, he would tell him directly.
After meeting Brother Xiao several times, Xu Enguang had gained a vague sense of what he was like.
Brother Xiao had always shown such kindness and patience to a stranger he barely knew, and it had made Xu Enguang feel warm and deeply moved.
So...
"...It really is just a feeling..."
That was...
A spark of inspiration flashed through Xu Enguang's mind.
Wasn't this just like a scene from a book?
Two people who had been apart for many years happened to meet again.
Their appearances had both changed.