Comment by Nami ❤ on Return of the First Generation꞉ The Strongest in History Reincarnates as His Descendant 1000 Years Later - Chapter 9

@Nami ❤ wdym the author doesn't know biology? Care to elaborate

@Callmheizzy  
Her body looks too mature for her age! 
Especially in that ancient time! Where fastfood is not there to mess up with your hormones! 

If you see previous generations pictures (maybe your mom grandma) in there adolescent or teens and compare them to this generation you will discover that they look more mature than previous generations! 
It's because change in diet and lifestyle 

So considering in this manhua there is no junk food the 10 year kid looks like a late teen 
And now too not that many kids have
Just growth this early! 

So it's weird to see characters depicted that way almost most characters

@Nami ❤ oh, well fairs it's fiction not everything will be correct.. but they have powers so if they look mature more than their age it isn't far fetched. They look alright to me, they might just look taller for their ages.