Xiaocong sensed her seriousness, and his expression immediately became earnest.
He nodded vigorously and said formally, "Mom, whatever you want to tell me, just say it. I will keep it firmly in my heart."
Due to his blindness, his memory was especially good. No one else had noticed this, but he was well aware of it.
Lin Xinlan considered his sensitive heart and feared he might misunderstand that she didn't want him anymore. She didn't want him to brood over it alone and be sad, so she decided to lay everything out.
Even though he was young, he wasn't completely unaware of things.
Some things, clearly explained to him, would naturally be understood.