The Strongest body.
Before leaving the outer area of the demon beast territory to the inner area, the first thing Ling Chen did was to change his appearance into that of an old man.
He felt kinda weird when Ling Zheng and the others kept on calling him father despite their height and growth differences. Especially, after they were making fun of Ling Lei.
Technically, he was older than all of them by a lot, but due to their power and body Constitutions that allowed them to grow faster and control their speed of growth, they somehow became taller and looked older than him in just a few days after they were born.
Due to the fact, Ling Chen was born in a human body with some modifications, he was unable to control his speed of growth like them. He could only grow like a normal human.
It's already been an hour since Ling Chen and his group left for the inner area of the demon beast territory, so far they haven't encountered any demon beasts.