If there's one thing Lin Yun's noticed about his parents, it's that they're weirdos.
His mother looks, at first glance ,like a gentle and refined noblewoman of proper breeding. she even acts like it most of the time but Lin Yun was there when an unlucky Assassin tried to kill them when Mother was reading them a story.
The whole room was destroyed except for a circle around their crib.
Their Father isn't much better either. while on the surface he seems like an elegant scholar, there has been quite a few times where he visited them while covered in blood splatters. He comes when Mother is here sometimes, she's not even surprised just nagging at him to clean up the blood first. there was one memorable occasion when he came in while wearing a dress and makeup, Lin Yun didn't recognize him until Mother came in and dragged him out.
Father either has some heavy tastes or is an assassin.
Has he said how boring being a baby is? Because it's really boring. the only thing he can do to entertain himself when their parents aren't here is try to absorb the maybe spiritual energy in the air. it's a slow going process because just mentally screaming at it to come closer doesn't work. The most he's been able to do is nudge the energy a bit.
Well he's still got a long time as a baby the slow and steady way it is.
What Lin Yun didn't know is that you're not supposed to be able to 'nudge' Qi. cultivators normals use manuals and follow the exact breathing patters and postures to absorb Qi. only the truly freakish geniuses or those with high cultivation can manipulate Qi that is outside their bodies.
The days turned into week and those weeks turned into months, Lin Yun and Lin Yue turned one year old. Not much changed about their appearance, except in their black hair grew a streak of white. At this point they've both mastered speaking and walking, well as much as a year old toddler can master it. It helps that they've discovered that what one twin learns the other twin does too, not just the mental part that's obvious but the physical development and muscle memory gets carried over too.
No they don't know how it work but they are definitely going to abuse the hell out of it. It is literally putting in half the effort and getting twice the rewards.
Now year old toddlers aren't supposed to be as developed or mature as they are. Contrary to their belief, Lin Yun and Lin Yue are both horrible at acting normal. Other parents would probably be worried or suspicious but the twin's parents are a special kind of crazy.
if you asked about the twin's abnormal development you'd get one of two responses
"Hm? they're my children of course they'll be exceptional"
"isn't this pace normal? i remember i was like them at this age"
It's a good thing both of their parents are seen as freaks by the rest of the world, their behavior isn't that strange in that contex.